diff --git a/backend/apps/factory/serializers.py b/backend/apps/factory/serializers.py
index 00d70c4..2868a95 100644
--- a/backend/apps/factory/serializers.py
+++ b/backend/apps/factory/serializers.py
@@ -7,25 +7,32 @@ class FactorySerializer(serializers.ModelSerializer):
     工厂序列化器
     """
     material_count = serializers.SerializerMethodField()
+    usernames = serializers.SerializerMethodField()
 
     class Meta:
         model = Factory
         fields = ['id', 'dealer_name', 'product_category', 'factory_name', 
                   'brand', 'province', 'city', 'district', 
-                  'address', 'website', 'created_at', 'updated_at', 'material_count']
-        read_only_fields = ['id', 'created_at', 'updated_at', 'material_count']
+                  'address', 'website', 'created_at', 'updated_at',
+                  'material_count', 'usernames']
+        read_only_fields = ['id', 'created_at', 'updated_at', 'material_count', 'usernames']
 
     def get_material_count(self, obj):
-        """
-        获取工厂的材料数量
-        """
         return obj.materials.count()
 
+    def get_usernames(self, obj):
+        return list(obj.users.values_list('username', flat=True))
+
 
 class FactoryListSerializer(serializers.ModelSerializer):
     """
     工厂列表序列化器（简化版）
     """
+    usernames = serializers.SerializerMethodField()
+
     class Meta:
         model = Factory
-        fields = ['id', 'factory_name', 'brand', 'province', 'city', 'dealer_name']
+        fields = ['id', 'factory_name', 'brand', 'province', 'city', 'dealer_name', 'usernames']
+
+    def get_usernames(self, obj):
+        return list(obj.users.values_list('username', flat=True))
diff --git a/backend/apps/statistics/views.py b/backend/apps/statistics/views.py
index 5dbbd9b..5fdbf29 100644
--- a/backend/apps/statistics/views.py
+++ b/backend/apps/statistics/views.py
@@ -48,8 +48,8 @@ def overview_statistics(request):
         count=Count('id')
     ).order_by('-count')
 
-    # 按地区的工厂数量分布
-    region_stats = Factory.objects.values('province', 'city').annotate(
+    # 按省份的工厂数量分布
+    region_stats = Factory.objects.values('province').annotate(
         count=Count('id')
     ).order_by('-count')
 
@@ -167,7 +167,7 @@ def factory_statistics(request):
     if request.user.role != 'admin':
         return Response({"detail": "无权访问"}, status=403)
 
-    region_stats = list(Factory.objects.values('province', 'city').annotate(
+    region_stats = list(Factory.objects.values('province').annotate(
         count=Count('id')
     ).order_by('-count'))
 
diff --git a/frontend/src/styles/screen.css b/frontend/src/styles/screen.css
index ea82301..cb632eb 100644
--- a/frontend/src/styles/screen.css
+++ b/frontend/src/styles/screen.css
@@ -1,4 +1,4 @@
-.screen-body {
+.screen-body {
   margin: 0;
   background: radial-gradient(circle at top left, #203450 0%, #0c1422 45%, #070b12 100%);
   color: #e6edf5;
@@ -101,11 +101,11 @@
 }
 
 .screen-card {
-  background: rgba(7, 14, 24, 0.92);
-  border: 1px solid rgba(159, 226, 255, 0.18);
+  background: linear-gradient(145deg, rgba(20, 38, 62, 0.88), rgba(12, 24, 44, 0.92));
+  border: 1px solid rgba(159, 226, 255, 0.12);
   border-radius: 18px;
   padding: 16px;
-  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45);
+  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
   position: relative;
   overflow: hidden;
 }
@@ -147,9 +147,9 @@
 .stat-card {
   padding: 16px;
   border-radius: 14px;
-  background: linear-gradient(140deg, rgba(78, 134, 184, 0.35), rgba(8, 18, 28, 0.9));
-  border: 1px solid rgba(255, 255, 255, 0.06);
-  box-shadow: inset 0 0 20px rgba(159, 226, 255, 0.08);
+  background: linear-gradient(140deg, rgba(78, 134, 184, 0.3), rgba(16, 30, 52, 0.85));
+  border: 1px solid rgba(159, 226, 255, 0.1);
+  box-shadow: inset 0 0 20px rgba(159, 226, 255, 0.06);
 }
 
 .stat-card .label {
diff --git a/frontend/src/utils/chartTheme.js b/frontend/src/utils/chartTheme.js
new file mode 100644
index 0000000..b4ea8a0
--- /dev/null
+++ b/frontend/src/utils/chartTheme.js
@@ -0,0 +1,47 @@
+import * as echarts from 'echarts'
+
+const COLORS = [
+  '#36d6fc', '#7b6cf6', '#f5a623', '#5dd9a7',
+  '#f06292', '#4fc3f7', '#ffd54f', '#9575cd',
+  '#4db6ac', '#ff8a65'
+]
+
+const TEXT = '#c9d7e6'
+const AXIS = 'rgba(180, 200, 220, 0.55)'
+const SPLIT = 'rgba(159, 226, 255, 0.06)'
+
+echarts.registerTheme('screen-dark', {
+  color: COLORS,
+  backgroundColor: 'transparent',
+  textStyle: { color: TEXT, fontSize: 14 },
+  title: { textStyle: { color: TEXT, fontSize: 16 } },
+  legend: {
+    textStyle: { color: TEXT, fontSize: 13 }
+  },
+  tooltip: {
+    backgroundColor: 'rgba(12, 22, 38, 0.92)',
+    borderColor: 'rgba(54, 214, 252, 0.25)',
+    textStyle: { color: '#e6edf5', fontSize: 13 }
+  },
+  categoryAxis: {
+    axisLine: { lineStyle: { color: AXIS } },
+    axisTick: { lineStyle: { color: AXIS } },
+    axisLabel: { color: TEXT, fontSize: 13 },
+    splitLine: { lineStyle: { color: SPLIT } }
+  },
+  valueAxis: {
+    axisLine: { lineStyle: { color: AXIS } },
+    axisTick: { lineStyle: { color: AXIS } },
+    axisLabel: { color: TEXT, fontSize: 13 },
+    splitLine: { lineStyle: { color: SPLIT } }
+  },
+  line: {
+    smooth: true,
+    symbolSize: 6
+  },
+  pie: {
+    label: { color: TEXT, fontSize: 13 }
+  }
+})
+
+export const THEME = 'screen-dark'
diff --git a/frontend/src/views/FactoryDetail.vue b/frontend/src/views/FactoryDetail.vue
index 25a2a6b..12b9d1d 100644
--- a/frontend/src/views/FactoryDetail.vue
+++ b/frontend/src/views/FactoryDetail.vue
@@ -13,6 +13,7 @@
         <el-descriptions-item label="地区">{{ formatRegion(factory.province, factory.city, factory.district) }}</el-descriptions-item>
         <el-descriptions-item label="地址">{{ factory.address }}</el-descriptions-item>
         <el-descriptions-item label="官网">{{ factory.website }}</el-descriptions-item>
+        <el-descriptions-item label="用户账号">{{ (factory.usernames || []).join('、') || '-' }}</el-descriptions-item>
         <el-descriptions-item label="材料数量">{{ factory.material_count }}</el-descriptions-item>
       </el-descriptions>
     </div>
diff --git a/frontend/src/views/FactoryManage.vue b/frontend/src/views/FactoryManage.vue
index 875275b..3e86f10 100644
--- a/frontend/src/views/FactoryManage.vue
+++ b/frontend/src/views/FactoryManage.vue
@@ -8,6 +8,11 @@
       <el-table-column prop="factory_name" label="工厂全称" />
       <el-table-column prop="brand" label="品牌" />
       <el-table-column prop="dealer_name" label="经销商" />
+      <el-table-column label="用户账号">
+        <template #default="scope">
+          {{ (scope.row.usernames || []).join('、') || '-' }}
+        </template>
+      </el-table-column>
       <el-table-column label="地区">
         <template #default="scope">
           {{ formatRegion(scope.row.province, scope.row.city, scope.row.district) }}
@@ -54,6 +59,7 @@
           <el-cascader
             v-model="regionValue"
             :options="regionOptions"
+            :props="{ value: 'label' }"
             clearable
             @change="onRegionChange"
           />
@@ -79,7 +85,7 @@ import { useRouter } from 'vue-router'
 import { ElMessage, ElMessageBox } from 'element-plus'
 import { regionData } from 'element-china-area-data'
 import { useAuth } from '@/store/auth'
-import { formatRegion } from '@/utils/region'
+import { formatRegion, regionLabel } from '@/utils/region'
 import { fetchFactories, fetchFactoryDetail, createFactory, updateFactory, deleteFactory } from '@/api/factory'
 
 const router = useRouter()
@@ -154,7 +160,7 @@ const openEdit = async (row) => {
   currentId.value = row.id
   const detail = await fetchFactoryDetail(row.id)
   Object.assign(form, detail)
-  regionValue.value = [detail.province, detail.city, detail.district].filter(Boolean)
+  regionValue.value = [detail.province, detail.city, detail.district].filter(Boolean).map(regionLabel)
   dialogTitle.value = '编辑工厂'
   dialogVisible.value = true
 }
diff --git a/frontend/src/views/screen/ScreenFactories.vue b/frontend/src/views/screen/ScreenFactories.vue
index fdc38ff..2706a07 100644
--- a/frontend/src/views/screen/ScreenFactories.vue
+++ b/frontend/src/views/screen/ScreenFactories.vue
@@ -1,4 +1,4 @@
-<template>
+<template>
   <div>
     <div class="screen-grid">
       <div class="screen-card" style="grid-column: span 6;">
@@ -32,6 +32,7 @@
 import { ref, onMounted, onBeforeUnmount } from 'vue'
 import { useRouter } from 'vue-router'
 import * as echarts from 'echarts'
+import { THEME } from '@/utils/chartTheme'
 import { regionLabel, formatRegion } from '@/utils/region'
 import { fetchFactoryStats } from '@/api/statistics'
 
@@ -45,19 +46,23 @@ const onResize = () => charts.forEach((chart) => chart.resize())
 
 const initCharts = () => {
   charts = [
-    echarts.init(regionChart.value),
-    echarts.init(categoryChart.value)
+    echarts.init(regionChart.value, THEME),
+    echarts.init(categoryChart.value, THEME)
   ]
 }
 
 const updateCharts = (data) => {
   const regionData = (data.region_stats || []).map((item) => ({
-    name: `${regionLabel(item.province)}-${regionLabel(item.city)}`,
+    name: regionLabel(item.province),
     value: item.count
   }))
   charts[0].setOption({
     tooltip: { trigger: 'item' },
-    series: [{ type: 'pie', radius: ['30%', '70%'], data: regionData }]
+    series: [{
+      type: 'pie',
+      radius: ['30%', '70%'],
+      data: regionData
+    }]
   })
 
   const factoryStats = data.factory_category_stats || []
@@ -76,10 +81,10 @@ const updateCharts = (data) => {
 
   charts[1].setOption({
     tooltip: { trigger: 'axis' },
-    legend: { textStyle: { color: '#c9d7e6' } },
+    legend: {},
     grid: { left: 40, right: 20, top: 30, bottom: 40 },
-    xAxis: { type: 'category', data: factoriesAxis, axisLabel: { color: '#9fb3c8', rotate: 20 } },
-    yAxis: { type: 'value', axisLabel: { color: '#9fb3c8' } },
+    xAxis: { type: 'category', data: factoriesAxis, axisLabel: { rotate: 20 } },
+    yAxis: { type: 'value' },
     series
   })
 }
diff --git a/frontend/src/views/screen/ScreenMaterials.vue b/frontend/src/views/screen/ScreenMaterials.vue
index edfd4c7..6c4a99e 100644
--- a/frontend/src/views/screen/ScreenMaterials.vue
+++ b/frontend/src/views/screen/ScreenMaterials.vue
@@ -1,4 +1,4 @@
-<template>
+<template>
   <div>
     <div class="toolbar" style="margin-bottom: 16px;">
       <el-select v-model="subcategory" placeholder="按材料子类筛选" clearable @change="loadData" style="width: 220px">
@@ -42,6 +42,7 @@
 import { ref, onMounted, onBeforeUnmount } from 'vue'
 import { useRouter } from 'vue-router'
 import * as echarts from 'echarts'
+import { THEME } from '@/utils/chartTheme'
 import { fetchMaterialStats } from '@/api/statistics'
 
 const router = useRouter()
@@ -62,9 +63,9 @@ const onResize = () => charts.forEach((chart) => chart.resize())
 
 const initCharts = () => {
   charts = [
-    echarts.init(starChart.value),
-    echarts.init(advChart.value),
-    echarts.init(sceneChart.value)
+    echarts.init(starChart.value, THEME),
+    echarts.init(advChart.value, THEME),
+    echarts.init(sceneChart.value, THEME)
   ]
 }
 
@@ -78,15 +79,16 @@ const updateCharts = (data) => {
   const levels = data.levels || [1, 2, 3]
   charts[0].setOption({
     tooltip: { trigger: 'axis' },
-    legend: { textStyle: { color: '#c9d7e6' } },
-    xAxis: { type: 'category', data: levels.map((l) => `${l}星`), axisLabel: { color: '#9fb3c8' } },
-    yAxis: { type: 'value', axisLabel: { color: '#9fb3c8' } },
+    legend: {},
+    grid: { left: 40, right: 20, top: 30, bottom: 30 },
+    xAxis: { type: 'category', data: levels.map((l) => `${l}星`) },
+    yAxis: { type: 'value' },
     series: [
-      { name: '质量', type: 'line', data: data.star_stats.quality_level, smooth: true },
-      { name: '耐久', type: 'line', data: data.star_stats.durability_level, smooth: true },
-      { name: '环保', type: 'line', data: data.star_stats.eco_level, smooth: true },
-      { name: '低碳', type: 'line', data: data.star_stats.carbon_level, smooth: true },
-      { name: '总评', type: 'line', data: data.star_stats.score_level, smooth: true }
+      { name: '质量', type: 'line', data: data.star_stats.quality_level },
+      { name: '耐久', type: 'line', data: data.star_stats.durability_level },
+      { name: '环保', type: 'line', data: data.star_stats.eco_level },
+      { name: '低碳', type: 'line', data: data.star_stats.carbon_level },
+      { name: '总评', type: 'line', data: data.star_stats.score_level }
     ]
   })
 
@@ -103,17 +105,20 @@ const updateCharts = (data) => {
   }))
   charts[1].setOption({
     tooltip: { trigger: 'axis' },
-    legend: { textStyle: { color: '#c9d7e6' } },
-    xAxis: { type: 'category', data: advTypes.map((adv) => mapLabel(choices.advantage, adv)), axisLabel: { color: '#9fb3c8' } },
-    yAxis: { type: 'value', axisLabel: { color: '#9fb3c8' } },
+    legend: {},
+    grid: { left: 40, right: 20, top: 30, bottom: 30 },
+    xAxis: { type: 'category', data: advTypes.map((adv) => mapLabel(choices.advantage, adv)) },
+    yAxis: { type: 'value' },
     series
   })
 
   const sceneStats = data.application_scene_stats || []
   charts[2].setOption({
-    xAxis: { type: 'category', data: sceneStats.map((item) => mapLabel(choices.application_scene, item.application_scene)), axisLabel: { color: '#9fb3c8' } },
-    yAxis: { type: 'value', axisLabel: { color: '#9fb3c8' } },
-    series: [{ type: 'bar', data: sceneStats.map((item) => item.count), itemStyle: { color: '#f2b24c' } }]
+    tooltip: { trigger: 'axis' },
+    grid: { left: 40, right: 20, top: 20, bottom: 30 },
+    xAxis: { type: 'category', data: sceneStats.map((item) => mapLabel(choices.application_scene, item.application_scene)) },
+    yAxis: { type: 'value' },
+    series: [{ type: 'bar', data: sceneStats.map((item) => item.count), barWidth: '50%' }]
   })
 }
 
diff --git a/frontend/src/views/screen/ScreenOverview.vue b/frontend/src/views/screen/ScreenOverview.vue
index 9d8ef86..44742f3 100644
--- a/frontend/src/views/screen/ScreenOverview.vue
+++ b/frontend/src/views/screen/ScreenOverview.vue
@@ -1,4 +1,4 @@
-<template>
+<template>
   <div>
     <div class="stat-cards">
       <div class="stat-card">
@@ -55,6 +55,7 @@
 import { ref, onMounted, onBeforeUnmount } from 'vue'
 import { useRouter } from 'vue-router'
 import * as echarts from 'echarts'
+import { THEME } from '@/utils/chartTheme'
 import { regionLabel } from '@/utils/region'
 import { fetchOverviewStats } from '@/api/statistics'
 
@@ -71,10 +72,10 @@ const onResize = () => charts.forEach((chart) => chart.resize())
 
 const initCharts = () => {
   charts = [
-    echarts.init(majorChart.value),
-    echarts.init(subChart.value),
-    echarts.init(brandChart.value),
-    echarts.init(regionChart.value)
+    echarts.init(majorChart.value, THEME),
+    echarts.init(subChart.value, THEME),
+    echarts.init(brandChart.value, THEME),
+    echarts.init(regionChart.value, THEME)
   ]
 }
 
@@ -91,26 +92,23 @@ const updateCharts = () => {
   }))
   charts[0].setOption({
     tooltip: { trigger: 'item' },
-    series: [
-      {
-        type: 'pie',
-        radius: ['40%', '70%'],
-        data: majorData
-      }
-    ]
+    series: [{
+      type: 'pie',
+      radius: ['40%', '70%'],
+      data: majorData
+    }]
   })
 
   const subData = stats.value.material_subcategory_stats || []
   charts[1].setOption({
     grid: { left: 80, right: 20, top: 20, bottom: 20 },
-    xAxis: { type: 'value', axisLabel: { color: '#9fb3c8' } },
+    xAxis: { type: 'value' },
     yAxis: {
       type: 'category',
-      data: subData.map((item) => item.material_subcategory),
-      axisLabel: { color: '#9fb3c8' }
+      data: subData.map((item) => item.material_subcategory)
     },
     series: [
-      { type: 'bar', data: subData.map((item) => item.count), itemStyle: { color: '#7cb4e3' } }
+      { type: 'bar', data: subData.map((item) => item.count), barWidth: '60%' }
     ]
   })
 
@@ -119,31 +117,29 @@ const updateCharts = () => {
     value: item.count
   }))
   charts[2].setOption({
-    series: [
-      {
-        type: 'treemap',
-        data: brandData,
-        label: { show: true, color: '#0b121c' },
-        itemStyle: {
-          borderColor: '#0b121c'
-        }
-      }
-    ]
+    tooltip: { trigger: 'item' },
+    series: [{
+      type: 'treemap',
+      data: brandData,
+      label: { show: true, color: '#e8f0f8', fontSize: 12 },
+      itemStyle: { borderColor: 'rgba(12, 24, 44, 0.6)', borderWidth: 2 },
+      levels: [{
+        itemStyle: { borderColor: 'rgba(12, 24, 44, 0.8)', borderWidth: 3, gapWidth: 3 }
+      }]
+    }]
   })
 
   const regionData = (stats.value.region_stats || []).map((item) => ({
-    name: `${regionLabel(item.province)}-${regionLabel(item.city)}`,
+    name: regionLabel(item.province),
     value: item.count
   }))
   charts[3].setOption({
     tooltip: { trigger: 'item' },
-    series: [
-      {
-        type: 'pie',
-        radius: ['30%', '70%'],
-        data: regionData
-      }
-    ]
+    series: [{
+      type: 'pie',
+      radius: ['30%', '70%'],
+      data: regionData
+    }]
   })
 }