diff --git a/astrbot/dashboard/routes/plugin.py b/astrbot/dashboard/routes/plugin.py
index 092dcf6d33..034e742848 100644
--- a/astrbot/dashboard/routes/plugin.py
+++ b/astrbot/dashboard/routes/plugin.py
@@ -1281,6 +1281,7 @@ async def process_plugin(plugin):
         for plugin, logo_url, pages in results:
             _t = {
                 "name": plugin.name,
+                "marketplace_name": (plugin.name or "").replace("_", "-"),
                 "repo": "" if plugin.repo is None else str(plugin.repo),
                 "author": plugin.author,
                 "desc": plugin.desc,
@@ -1332,6 +1333,7 @@ async def get_plugin_detail(self):
                 .ok(
                     {
                         "name": plugin.name,
+                        "marketplace_name": (plugin.name or "").replace("_", "-"),
                         "repo": "" if plugin.repo is None else str(plugin.repo),
                         "author": plugin.author,
                         "desc": plugin.desc,
@@ -1384,6 +1386,7 @@ async def get_plugin_page_components(self, plugin) -> list[dict]:
                 "i18n_key": page["i18n_key"],
                 "description": "Plugin Page entry",
                 "plugin_name": plugin.name,
+                "plugin_marketplace_name": (plugin.name or "").replace("_", "-"),
             }
             for page in pages
         ]
diff --git a/dashboard/src/views/extension/useExtensionPage.js b/dashboard/src/views/extension/useExtensionPage.js
index 8db1a9c33c..05b3c11461 100644
--- a/dashboard/src/views/extension/useExtensionPage.js
+++ b/dashboard/src/views/extension/useExtensionPage.js
@@ -484,7 +484,7 @@ export const useExtensionPage = () => {
       const failRes = await axios.get("/api/plugin/source/get-failed-plugins");
       failedPluginsDict.value = failRes.data.data || {};
 
-      checkUpdate();
+      // checkUpdate() is called after pluginMarketData is loaded in onMounted
     } catch (err) {
       toast(err, "error");
     } finally {
@@ -642,14 +642,20 @@ export const useExtensionPage = () => {
       if (plugin.repo) {
         onlinePluginsMap.set(normalizeInstallUrl(plugin.repo).toLowerCase(), plugin);
       }
-      onlinePluginsNameMap.set(plugin.name, plugin);
+      const normalizedName = normalizeStr(plugin.name);
+      onlinePluginsNameMap.set(normalizedName, plugin);
     });
 
     const data = Array.isArray(extension_data?.data) ? extension_data.data : [];
+    
     data.forEach((extension) => {
       const repoKey = extension.repo ? normalizeInstallUrl(extension.repo).toLowerCase() : undefined;
       const onlinePlugin = repoKey ? onlinePluginsMap.get(repoKey) : null;
-      const onlinePluginByName = onlinePluginsNameMap.get(extension.name);
+      
+      // 使用 marketplace_name 进行市场匹配（后端已统一为减号格式）
+      const normalizedExtensionName = normalizeStr(extension.marketplace_name);
+      const onlinePluginByName = onlinePluginsNameMap.get(normalizedExtensionName);
+      
       const matchedPlugin = onlinePlugin || onlinePluginByName;
 
       if (matchedPlugin) {
@@ -1233,17 +1239,22 @@ export const useExtensionPage = () => {
 
   const checkAlreadyInstalled = () => {
     const data = Array.isArray(extension_data?.data) ? extension_data.data : [];
+    // repo 匹配：两边统一使用 normalizeInstallUrl
+    const installedRepos = new Set(
+      data
+        .filter((ext) => ext.repo)
+        .map((ext) => normalizeInstallUrl(ext.repo).toLowerCase()),
+    );
+    // 使用 marketplace_name 进行市场匹配（后端已统一为减号格式）
+    const installedNames = new Set(data.map((ext) => normalizeStr(ext.marketplace_name)));
+    // 创建映射用于查询已安装插件的详细信息
     const installedByRepo = new Map(
       data
         .filter((ext) => ext.repo)
         .map((ext) => [normalizeInstallUrl(ext.repo).toLowerCase(), ext]),
     );
-    const installedRepos = new Set(installedByRepo.keys());
-    const installedNames = new Set(
-      data.map((ext) => normalizeStr(ext.name).replace(/_/g, "-")),
-    ); //统一格式，以防下面的匹配不生效
-    const installedByName = new Map(data.map((ext) => [ext.name, ext]));
-
+    const installedByName = new Map(data.map((ext) => [ext.marketplace_name, ext]));
+    
     for (let i = 0; i < pluginMarketData.value.length; i++) {
       const plugin = pluginMarketData.value[i];
       const matchedInstalled =
@@ -1265,8 +1276,8 @@ export const useExtensionPage = () => {
       }
 
       plugin.installed =
-        (plugin.repo && installedRepos.has(normalizeInstallUrl(plugin.repo).toLowerCase())) ||
-        installedNames.has(normalizeStr(plugin.name).replace(/_/g, "-")); //统一格式，防止匹配失败
+        installedRepos.has(normalizeInstallUrl(plugin.repo).toLowerCase()) ||
+        installedNames.has(normalizeStr(plugin.name));
     }
 
     let installed = [];
@@ -1477,6 +1488,7 @@ export const useExtensionPage = () => {
     selectedMarketInstallPlugin.value = null;
     await getExtensions();
     checkAlreadyInstalled();
+    checkUpdate();
 
     viewReadme({
       name: resData.data.name,
diff --git a/tests/test_dashboard.py b/tests/test_dashboard.py
index 11870b3ddc..ef6edc899d 100644
--- a/tests/test_dashboard.py
+++ b/tests/test_dashboard.py
@@ -889,6 +889,7 @@ async def test_plugin_detail_includes_scanned_page_component(
             "i18n_key": f"pages.{PLUGIN_PAGE_DEMO_PAGE_NAME}",
             "description": "Plugin Page entry",
             "plugin_name": PLUGIN_PAGE_DEMO_NAME,
+            "plugin_marketplace_name": PLUGIN_PAGE_DEMO_NAME.replace("_", "-"),
         }
     ]