diff --git a/src/views/mtm/route_show.vue b/src/views/mtm/route_show.vue
index 2aa4e53e..56d40d22 100644
--- a/src/views/mtm/route_show.vue
+++ b/src/views/mtm/route_show.vue
@@ -24,8 +24,7 @@
 						@tab-click="tabshandleClick">
 						<el-tab-pane :label="item" :name="item" v-for="item in tabsTitle" :key="item"></el-tab-pane>
 					</el-tabs>
-					<xtFlowViewer :nodes="nodes" :edges="edges" class="rs-flow__canvas"
-						style="min-height: 0">
+					<xtFlowViewer :nodes="nodes" :edges="edges" class="rs-flow__canvas">
 					</xtFlowViewer>
 				</div>
 
@@ -284,7 +283,7 @@ export default {
 }
 .rs-flow__canvas {
 	flex: 1;
-	min-height: 0;
+	min-height: 320px;
 }
 .rs-tabs {
 	/* el-tabs 的空 content 默认会 flex-grow，多个流程图时会把下方画布挤出可视区 */