diff --git a/web/static/js/chat.js b/web/static/js/chat.js
index 5948a767..fecd64dd 100644
--- a/web/static/js/chat.js
+++ b/web/static/js/chat.js
@@ -4532,6 +4532,10 @@ async function loadConversation(conversationId) {
         // 更新当前对话ID
         currentConversationId = conversationId;
         window._loadedConversationProjectId = conversation.projectId || conversation.project_id || '';
+        const conversationRoleName = conversation.roleName || conversation.role_name || '';
+        if (typeof window.setCurrentRole === 'function') {
+            window.setCurrentRole(conversationRoleName || '默认');
+        }
         try {
             window.currentConversationId = conversationId;
         } catch (e) { /* ignore */ }
diff --git a/web/static/js/roles.js b/web/static/js/roles.js
index 79f7af16..31ae16b3 100644
--- a/web/static/js/roles.js
+++ b/web/static/js/roles.js
@@ -1892,6 +1892,7 @@ function getCurrentRole() {
 // 暴露函数到全局作用域
 if (typeof window !== 'undefined') {
     window.getCurrentRole = getCurrentRole;
+    window.setCurrentRole = handleRoleChange;
     window.toggleRoleSelectionPanel = toggleRoleSelectionPanel;
     window.closeRoleSelectionPanel = closeRoleSelectionPanel;
     window.closeRoleSelectModal = closeRoleSelectModal;
@@ -1905,6 +1906,7 @@ if (typeof window !== 'undefined') {
         originalHandleRoleChange(roleName);
         if (typeof window !== 'undefined') {
             window.currentSelectedRole = getCurrentRole();
+            window.setCurrentRole = handleRoleChange;
         }
     };
 }