diff --git a/frontend/dist/assets/PersonalTodo-CLxJgd2z.css b/frontend/dist/assets/PersonalTodo-CLxJgd2z.css
deleted file mode 100644
index 6e48dc56..00000000
--- a/frontend/dist/assets/PersonalTodo-CLxJgd2z.css
+++ /dev/null
@@ -1 +0,0 @@
-.todo-card[data-v-addac169]{min-height:200px}.section-header[data-v-addac169]{font-weight:600;margin-bottom:8px}.input-row[data-v-addac169]{display:flex;gap:8px;margin-bottom:8px}.todo-list[data-v-addac169]{display:flex;flex-direction:column;gap:6px}.todo-item[data-v-addac169]{display:flex;align-items:center;justify-content:space-between;padding:6px 8px;border:1px solid #ebeef5;border-radius:6px}.empty[data-v-addac169]{color:#888}
diff --git a/frontend/dist/assets/SectionCard-OU1yLKDy.css b/frontend/dist/assets/SectionCard-OU1yLKDy.css
deleted file mode 100644
index 352914ae..00000000
--- a/frontend/dist/assets/SectionCard-OU1yLKDy.css
+++ /dev/null
@@ -1 +0,0 @@
-.section-card[data-v-63b635fd]{min-height:220px}.section-header[data-v-63b635fd]{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.list[data-v-63b635fd]{display:flex;flex-direction:column;gap:8px}.row[data-v-63b635fd]{padding:8px;border:1px solid #ebeef5;border-radius:6px;cursor:pointer}.row[data-v-63b635fd]:hover{background:#f5f7fa}.title[data-v-63b635fd]{font-weight:600}.meta[data-v-63b635fd]{margin-top:4px;display:flex;align-items:center;gap:8px;color:#666;font-size:12px}.sub[data-v-63b635fd],.empty[data-v-63b635fd]{color:#888}
diff --git a/frontend/dist/index.html b/frontend/dist/index.html
index 0dc8eb64..28c1d326 100644
--- a/frontend/dist/index.html
+++ b/frontend/dist/index.html
@@ -4,8 +4,8 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>CTMS</title>
-    <script type="module" crossorigin src="/assets/index-B28dIBQG.js"></script>
-    <link rel="stylesheet" crossorigin href="/assets/index-Dvp__k11.css">
+    <script type="module" crossorigin src="/assets/index-cQqawB_h.js"></script>
+    <link rel="stylesheet" crossorigin href="/assets/index-BtT9sBSg.css">
   </head>
   <body>
     <div id="app"></div>
diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index cb517758..8ee2521b 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -1,4 +1,4 @@
 <template>
   <router-view />
-  <!-- TODO: 预留聚合接口页面：/studies/{id}/overview /subjects/{id}/detail /sites/{id}/summary -->
+  <!-- TODO: 预留聚合接口页面：/study/{id}/overview /subjects/{id}/detail /sites/{id}/summary -->
 </template>
diff --git a/frontend/src/api/axios.ts b/frontend/src/api/axios.ts
index d6dcf8e5..f87c959b 100644
--- a/frontend/src/api/axios.ts
+++ b/frontend/src/api/axios.ts
@@ -46,7 +46,7 @@ instance.interceptors.response.use(
       }
       router.push("/login");
     };
-    // 如果当前项目不存在或已失效，清理项目并跳到项目列表
+    // 如果当前项目不存在或已失效，清理项目并跳到工作台
     if (status === 404 && typeof data?.message === "string" && data.message.toLowerCase().includes("study")) {
       try {
         const studyStore = useStudyStore();
@@ -54,7 +54,7 @@ instance.interceptors.response.use(
       } catch {
         /* ignore */
       }
-      router.push("/studies");
+      router.push("/workbench");
     }
     if (status === 401) {
       handleUnauthorized();
diff --git a/frontend/src/components/Layout.vue b/frontend/src/components/Layout.vue
index 8a766776..a8ec118d 100644
--- a/frontend/src/components/Layout.vue
+++ b/frontend/src/components/Layout.vue
@@ -25,10 +25,6 @@
             <el-icon><Suitcase /></el-icon>
             <span>项目管理</span>
           </el-menu-item>
-          <el-menu-item index="/studies">
-            <el-icon><List /></el-icon>
-            <span>项目列表</span>
-          </el-menu-item>
         </template>
         
         <template v-if="study.currentStudy">
@@ -136,7 +132,7 @@ import { useAuthStore } from "../store/auth";
 import { useStudyStore } from "../store/study";
 import StudySelector from "./StudySelector.vue";
 import { 
-  Monitor, User, Suitcase, List, House, Timer, UserFilled, 
+  Monitor, User, Suitcase, House, Timer, UserFilled, 
   Warning, InfoFilled, QuestionFilled, Checked, Management, 
   Money, Collection, Memo, ArrowDown, SwitchButton 
 } from "@element-plus/icons-vue";
diff --git a/frontend/src/components/StudySelector.vue b/frontend/src/components/StudySelector.vue
index c5d68a79..55d52dad 100644
--- a/frontend/src/components/StudySelector.vue
+++ b/frontend/src/components/StudySelector.vue
@@ -1,16 +1,28 @@
 <template>
-  <el-dropdown trigger="click" class="study-selector-dropdown">
+  <el-dropdown trigger="click" class="study-selector-dropdown" @command="onCommand">
     <div class="selector-trigger">
       <el-icon class="trigger-icon"><OfficeBuilding /></el-icon>
       <span class="current-study-name">{{ study.currentStudy?.name || "选择项目" }}</span>
       <el-icon class="arrow-icon"><ArrowDown /></el-icon>
     </div>
     <template #dropdown>
-      <el-dropdown-menu>
-        <el-dropdown-item @click="goSelect">
-          <el-icon><Switch /></el-icon>切换项目
+      <el-dropdown-menu class="study-dropdown">
+        <el-dropdown-item v-if="loading" disabled>
+          <el-icon><Loading /></el-icon>加载项目中...
         </el-dropdown-item>
-        <el-dropdown-item divided @click="clearStudy" class="danger-item">
+        <el-dropdown-item v-else-if="!studies.length" disabled>暂无可用项目</el-dropdown-item>
+        <el-dropdown-item
+          v-for="item in studies"
+          :key="item.id"
+          :command="{ type: 'switch', study: item }"
+          :class="{ active: study.currentStudy?.id === item.id }"
+        >
+          <div class="study-item">
+            <div class="name">{{ item.name }}</div>
+            <div class="code">{{ item.code }}</div>
+          </div>
+        </el-dropdown-item>
+        <el-dropdown-item divided command="clear" class="danger-item">
           <el-icon><Close /></el-icon>退出当前项目
         </el-dropdown-item>
       </el-dropdown-menu>
@@ -19,21 +31,46 @@
 </template>
 
 <script setup lang="ts">
+import { onMounted, ref } from "vue";
 import { useRouter } from "vue-router";
+import { ElMessage } from "element-plus";
 import { useStudyStore } from "../store/study";
-import { OfficeBuilding, ArrowDown, Switch, Close } from "@element-plus/icons-vue";
+import { fetchStudies } from "../api/studies";
+import type { Study } from "../types/api";
+import { OfficeBuilding, ArrowDown, Close, Loading } from "@element-plus/icons-vue";
 
 const router = useRouter();
 const study = useStudyStore();
+const studies = ref<Study[]>([]);
+const loading = ref(false);
 
-const goSelect = () => {
-  router.push("/studies");
+const loadStudies = async () => {
+  loading.value = true;
+  try {
+    const { data } = await fetchStudies();
+    studies.value = data.items || [];
+  } catch (e: any) {
+    ElMessage.error(e?.response?.data?.message || "项目列表加载失败");
+  } finally {
+    loading.value = false;
+  }
 };
 
-const clearStudy = () => {
-  study.clearCurrentStudy();
-  router.push("/studies");
+const onCommand = (cmd: any) => {
+  if (cmd === "clear") {
+    study.clearCurrentStudy();
+    router.push("/workbench");
+    return;
+  }
+  if (cmd?.type === "switch" && cmd.study) {
+    study.setCurrentStudy(cmd.study as Study);
+    router.push("/study/home");
+  }
 };
+
+onMounted(() => {
+  loadStudies();
+});
 </script>
 
 <style scoped>
@@ -74,6 +111,32 @@ const clearStudy = () => {
   color: var(--ctms-text-secondary);
 }
 
+.study-dropdown {
+  max-height: 320px;
+  overflow-y: auto;
+  min-width: 220px;
+}
+
+.study-item {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+}
+
+.study-item .name {
+  font-weight: 600;
+  color: var(--ctms-text-main);
+}
+
+.study-item .code {
+  font-size: 12px;
+  color: var(--ctms-text-secondary);
+}
+
+.active {
+  background-color: var(--ctms-primary-light);
+}
+
 .danger-item {
   color: var(--ctms-danger);
 }
diff --git a/frontend/src/router/index.ts b/frontend/src/router/index.ts
index cd065670..16af6a78 100644
--- a/frontend/src/router/index.ts
+++ b/frontend/src/router/index.ts
@@ -4,7 +4,6 @@ import { useStudyStore } from "../store/study";
 import Layout from "../components/Layout.vue";
 import Login from "../views/Login.vue";
 import Register from "../views/Register.vue";
-import StudyList from "../views/StudyList.vue";
 import StudyHome from "../views/StudyHome.vue";
 import Milestones from "../views/Milestones.vue";
 import MilestoneDetail from "../views/MilestoneDetail.vue";
@@ -52,7 +51,7 @@ const routes: RouteRecordRaw[] = [
   {
     path: "/",
     component: Layout,
-    redirect: "/studies",
+    redirect: "/workbench",
     children: [
       {
         path: "workbench",
@@ -243,18 +242,6 @@ const routes: RouteRecordRaw[] = [
     component: ProjectDetail,
     meta: { title: "项目详情", requiresAdmin: true },
   },
-  {
-    path: "/studies",
-    component: Layout,
-    children: [
-      {
-        path: "",
-        name: "StudyList",
-        component: StudyList,
-        meta: { title: "项目列表" },
-      },
-    ],
-  },
 ];
 
 const router = createRouter({
@@ -280,12 +267,12 @@ router.beforeEach(async (to, _from, next) => {
   }
   if ((to.path === "/login" || to.path === "/register") && token) {
     if (!auth.forceLogin) {
-      next({ path: studyStore.currentStudy ? "/study/home" : "/studies" });
+      next({ path: studyStore.currentStudy ? "/study/home" : "/workbench" });
       return;
     }
   }
   if (to.meta.requiresAdmin && auth.user?.role !== "ADMIN") {
-    next({ path: "/studies" });
+    next({ path: "/workbench" });
     return;
   }
   if (to.name === "AuditLogs") {
@@ -297,7 +284,7 @@ router.beforeEach(async (to, _from, next) => {
     }
   }
   if (to.path.startsWith("/study") && !studyStore.currentStudy) {
-    next({ path: "/studies" });
+    next({ path: "/workbench" });
     return;
   }
   next();
diff --git a/frontend/src/views/StudyHome.vue b/frontend/src/views/StudyHome.vue
index 789d8d75..e4e4523d 100644
--- a/frontend/src/views/StudyHome.vue
+++ b/frontend/src/views/StudyHome.vue
@@ -83,12 +83,12 @@
   </div>
   
   <div v-else class="empty-state-container">
-    <el-empty description="请先在顶部或项目列表选择一个当前项目" />
+    <el-empty description="请先在顶部选择一个当前项目" />
   </div>
 </template>
 
 <script setup lang="ts">
-import { computed, onMounted, ref } from "vue";
+import { computed, onMounted, ref, watch } from "vue";
 import { useAuthStore } from "../store/auth";
 import { useStudyStore } from "../store/study";
 import { fetchFinanceSummary, fetchOverdueAesCount, fetchOverdueQueriesCount, fetchProgress } from "../api/dashboard";
@@ -151,9 +151,24 @@ const loadData = async () => {
   }
 };
 
+const resetData = () => {
+  progress.value = null;
+  financeSummary.value = null;
+  overdueAes.value = 0;
+  overdueQueries.value = 0;
+};
+
 onMounted(() => {
   loadData();
 });
+
+watch(
+  () => study.currentStudy?.id,
+  () => {
+    resetData();
+    loadData();
+  }
+);
 </script>
 
 <style scoped>
diff --git a/frontend/src/views/StudyList.vue b/frontend/src/views/StudyList.vue
deleted file mode 100644
index 4918464b..00000000
--- a/frontend/src/views/StudyList.vue
+++ /dev/null
@@ -1,63 +0,0 @@
-<template>
-  <div class="study-list">
-    <el-card>
-      <div class="header">
-        <h3>项目列表</h3>
-      </div>
-      <el-table :data="studies" style="width: 100%" v-loading="loading">
-        <el-table-column prop="code" label="项目编号" width="160" />
-        <el-table-column prop="name" label="项目名称" />
-        <el-table-column prop="status" label="状态" width="120" />
-        <el-table-column label="操作" width="140">
-          <template #default="scope">
-            <el-button type="primary" size="small" @click="enterStudy(scope.row)">进入项目</el-button>
-          </template>
-        </el-table-column>
-      </el-table>
-    </el-card>
-  </div>
-</template>
-
-<script setup lang="ts">
-import { onMounted, ref } from "vue";
-import { useRouter } from "vue-router";
-import { fetchStudies } from "../api/studies";
-import { useStudyStore } from "../store/study";
-import type { Study } from "../types/api";
-
-const studies = ref<Study[]>([]);
-const loading = ref(false);
-const router = useRouter();
-const studyStore = useStudyStore();
-
-const loadStudies = async () => {
-  loading.value = true;
-  try {
-    const { data } = await fetchStudies();
-    studies.value = data.items;
-  } finally {
-    loading.value = false;
-  }
-};
-
-const enterStudy = (study: Study) => {
-  studyStore.setCurrentStudy(study);
-  router.push("/study/home");
-};
-
-onMounted(() => {
-  loadStudies();
-});
-</script>
-
-<style scoped>
-.study-list {
-  padding: 16px;
-}
-.header {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  margin-bottom: 12px;
-}
-</style>
diff --git a/frontend/src/views/workbench/MyWorkbench.vue b/frontend/src/views/workbench/MyWorkbench.vue
index 76f16691..2a8fb906 100644
--- a/frontend/src/views/workbench/MyWorkbench.vue
+++ b/frontend/src/views/workbench/MyWorkbench.vue
@@ -14,7 +14,7 @@
     <!-- 提示未选择项目 -->
     <el-alert
       v-if="!currentStudyId"
-      title="请先在顶部导航或项目列表中选择一个项目，以开启完整的工作台功能。"
+      title="请先在顶部导航选择一个项目，以开启完整的工作台功能。"
       type="warning"
       show-icon
       :closable="false"
