diff --git a/空气质量预测/源码/服务端/iapip-svr/src/controllers/forum.ts b/空气质量预测/源码/服务端/iapip-svr/src/controllers/forum.ts
index b86e842..59e4346 100644
--- a/空气质量预测/源码/服务端/iapip-svr/src/controllers/forum.ts
+++ b/空气质量预测/源码/服务端/iapip-svr/src/controllers/forum.ts
@@ -148,4 +148,76 @@ forumRouter.post(
     }
 )
 
+// 点赞状态（登录，用于详情页初始化）
+forumRouter.get('/threads/:id/like', authn(CERT_TYPE.ACCOUNT), async ctx => {
+    const id = Number(ctx.params.id)
+    const cert = ctx.state.acct_cert as UserCert
+    const existing = await db.forumThreadLike.findUnique({
+        where: { thread_id_user_id: { thread_id: id, user_id: cert.id } }
+    })
+    const thread = await db.forumThread.findFirst({ where: { id }, select: { like_count: true } })
+    ctx.body = { liked: !!existing, like_count: thread?.like_count ?? 0 }
+})
+
+// 点赞 / 取消（登录，toggle）
+forumRouter.post('/threads/:id/like', authn(CERT_TYPE.ACCOUNT), async ctx => {
+    const id = Number(ctx.params.id)
+    const cert = ctx.state.acct_cert as UserCert
+    const thread = await db.forumThread.findFirst({ where: { id, deleted: 0 } })
+    if (!thread) {
+        ctx.throw(422, fail(ERR_CODE.UNKNOWN_ERR, '帖子不存在'))
+        return
+    }
+    const existing = await db.forumThreadLike.findUnique({
+        where: { thread_id_user_id: { thread_id: id, user_id: cert.id } }
+    })
+    const liked = !existing
+    const updated = await db.$transaction(async tx => {
+        if (existing) {
+            await tx.forumThreadLike.delete({
+                where: { thread_id_user_id: { thread_id: id, user_id: cert.id } }
+            })
+            return tx.forumThread.update({ where: { id }, data: { like_count: { decrement: 1 } } })
+        } else {
+            await tx.forumThreadLike.create({ data: { thread_id: id, user_id: cert.id } })
+            return tx.forumThread.update({ where: { id }, data: { like_count: { increment: 1 } } })
+        }
+    })
+    ctx.body = { liked, like_count: updated.like_count }
+})
+
+// 删除自己的帖（登录，软删）
+forumRouter.delete('/threads/:id', authn(CERT_TYPE.ACCOUNT), async ctx => {
+    const id = Number(ctx.params.id)
+    const cert = ctx.state.acct_cert as UserCert
+    const thread = await db.forumThread.findFirst({ where: { id, deleted: 0 } })
+    if (!thread) {
+        ctx.throw(422, fail(ERR_CODE.UNKNOWN_ERR, '帖子不存在'))
+        return
+    }
+    if (thread.author_id !== cert.id) {
+        ctx.throw(422, fail(ERR_CODE.FORBIDDEN, '只能删除自己的帖子'))
+        return
+    }
+    await db.forumThread.update({ where: { id }, data: { deleted: 1 } })
+    ctx.body = { ok: true }
+})
+
+// 删除自己的回帖（登录，软删；不回退 floor）
+forumRouter.delete('/replies/:id', authn(CERT_TYPE.ACCOUNT), async ctx => {
+    const id = Number(ctx.params.id)
+    const cert = ctx.state.acct_cert as UserCert
+    const reply = await db.forumReply.findFirst({ where: { id, deleted: 0 } })
+    if (!reply) {
+        ctx.throw(422, fail(ERR_CODE.UNKNOWN_ERR, '回帖不存在'))
+        return
+    }
+    if (reply.author_id !== cert.id) {
+        ctx.throw(422, fail(ERR_CODE.FORBIDDEN, '只能删除自己的回帖'))
+        return
+    }
+    await db.forumReply.update({ where: { id }, data: { deleted: 1 } })
+    ctx.body = { ok: true }
+})
+
 export const forumRoutes = forumRouter.routes()