diff --git a/src/main/presenter/configPresenter/index.ts b/src/main/presenter/configPresenter/index.ts
index 0d06e82e57204044b4d55d4c91e52c84af338cc8..17a2b8416dc0ed61d09b28eab76336a712a55e43 100644
--- a/src/main/presenter/configPresenter/index.ts
+++ b/src/main/presenter/configPresenter/index.ts
@@ -1249,8 +1249,8 @@ export class ConfigPresenter implements IConfigPresenter {
   }
 
   // 获取默认系统提示词
-  async getDefaultSystemPrompt(): Promise<string> {
-    const default_system_prompt = await this.getBuildInSystemPrompt()
+  async getDefaultSystemPrompt(agent?: Agent): Promise<string> {
+    const default_system_prompt = await this.getBuildInSystemPrompt(agent)
     return default_system_prompt
   }
 
@@ -1269,10 +1269,20 @@ export class ConfigPresenter implements IConfigPresenter {
     this.setSetting('default_system_prompt', '')
   }
 
-  private async getBuildInSystemPrompt(): Promise<string> {
+  private async getBuildInSystemPrompt(agent?: Agent): Promise<string> {
     // 获取内置的系统提示词
+    let roleDefinition = ''
+    if (agent) {
+      roleDefinition += `Your name is ${agent.name},${agent.description}.`
+      if (agent.skills.length > 0) {
+        roleDefinition += `You have the following skills:\n`
+        for (const skill of agent.skills || []) {
+          roleDefinition += `- ${skill.name}=>${skill.description}\n`
+        }
+      }
+    }
     const useBuiltInTools = this.getUseBuiltInTools()
-    return await SYSTEM_PROMPT('', '', this.getLanguage(), '', useBuiltInTools)
+    return await SYSTEM_PROMPT('', '', this.getLanguage(), '', useBuiltInTools, roleDefinition)
   }
 
   async getSystemPrompts(): Promise<SystemPrompt[]> {
diff --git a/src/main/presenter/promptPresenter/system.ts b/src/main/presenter/promptPresenter/system.ts
index 6ad2091b3c679b76927d3e51c4ab263a770c161d..2b7a8af19a0208d64a86ba105193c4ea271d7d2f 100644
--- a/src/main/presenter/promptPresenter/system.ts
+++ b/src/main/presenter/promptPresenter/system.ts
@@ -29,9 +29,14 @@ async function generatePrompt(
   globalCustomInstructions?: string,
   language?: string,
   IgnoreInstructions?: string,
-  useBuiltInTools?: boolean
+  useBuiltInTools?: boolean,
+  roleDefinition?: string
 ): Promise<string> {
-  const promptSections = [markdownFormattingSection()]
+  const promptSections: string[] = []
+  if (roleDefinition) {
+    promptSections.push(roleDefinition)
+  }
+  promptSections.push(markdownFormattingSection())
 
   if (useBuiltInTools) {
     promptSections.push(`${getSharedToolUseSection()}
@@ -71,13 +76,15 @@ export const SYSTEM_PROMPT = async (
   globalCustomInstructions?: string,
   language?: string,
   IgnoreInstructions?: string,
-  useBuiltInTools?: boolean
+  useBuiltInTools?: boolean,
+  roleDefinition?: string
 ): Promise<string> => {
   return generatePrompt(
     cwd,
     globalCustomInstructions,
     language,
     IgnoreInstructions,
-    useBuiltInTools
+    useBuiltInTools,
+    roleDefinition
   )
 }
diff --git a/src/renderer/src/components/NewThread.vue b/src/renderer/src/components/NewThread.vue
index 69767d662a1568d4598ac738e4036615bdfafe15..93e330c0ea022d3396a75bb86f5f33a7fa3a2c08 100644
--- a/src/renderer/src/components/NewThread.vue
+++ b/src/renderer/src/components/NewThread.vue
@@ -140,7 +140,7 @@ import { Badge } from '@/components/ui/badge'
 import { Icon } from '@iconify/vue'
 import ModelSelect from './ModelSelect.vue'
 import { useChatStore } from '@/stores/chat'
-import { MODEL_META } from '@shared/presenter'
+import { Agent, MODEL_META } from '@shared/presenter'
 import { useSettingsStore } from '@/stores/settings'
 import { computed, nextTick, ref, watch, onMounted } from 'vue'
 import { UserMessageContent } from '@shared/chat'
@@ -164,8 +164,8 @@ const { t } = useI18n()
 const chatStore = useChatStore()
 const settingsStore = useSettingsStore()
 
-// 使用全局状态中的选中智能体
-const selectedAgent = computed(() => chatStore.selectedAgent)
+// 使用全局状态中的选中智能体（Pinia 会自动解包 ref，这里直接返回值）
+const selectedAgent = computed(() => chatStore.selectedAgent || null)
 const activeModel = ref({
   name: '',
   id: '',
@@ -193,6 +193,15 @@ const forcedSearch = ref<boolean | undefined>(undefined)
 const searchStrategy = ref<'turbo' | 'max' | undefined>(undefined)
 const reasoningEffort = ref<'minimal' | 'low' | 'medium' | 'high' | undefined>(undefined)
 const verbosity = ref<'low' | 'medium' | 'high' | undefined>(undefined)
+//动态加载系统提示词
+const loadSystemPrompt = async (agent?: Agent | null) => {
+  try {
+    const prompt = await configPresenter.getDefaultSystemPrompt(agent || undefined)
+    systemPrompt.value = prompt
+  } catch (error) {
+    console.error('[NewThread] Failed to load system prompt', error)
+  }
+}
 
 const name = computed(() => {
   return activeModel.value?.name ? activeModel.value.name.split('/').pop() : ''
@@ -409,9 +418,6 @@ watch(
 
 onMounted(async () => {
   const groupElement = document.querySelector('.new-thread-model-select')
-  configPresenter.getDefaultSystemPrompt().then((prompt) => {
-    systemPrompt.value = prompt
-  })
   if (groupElement) {
     useEventListener(groupElement, 'mouseenter', handleMouseEnter)
     useEventListener(groupElement, 'mouseleave', handleMouseLeave)
@@ -441,6 +447,14 @@ watch(
   { immediate: true }
 )
 
+watch(
+  selectedAgent,
+  (agent) => {
+    loadSystemPrompt(agent)
+  },
+  { immediate: true }
+)
+
 // 定义模板部分的类型
 interface TemplateTextPart {
   type: 'text'
diff --git a/src/renderer/src/components/TitleView.vue b/src/renderer/src/components/TitleView.vue
index 9a25ed6bcbe9096814bf4a39bb19c11f93e865b9..58703964dedffccbd728fa346a6e6862598b2eae 100644
--- a/src/renderer/src/components/TitleView.vue
+++ b/src/renderer/src/components/TitleView.vue
@@ -106,7 +106,7 @@ import ScrollablePopover from './ScrollablePopover.vue'
 import ChatConfig from './ChatConfig.vue'
 import ModelSelect from './ModelSelect.vue'
 import ModelIcon from './icons/ModelIcon.vue'
-import { MODEL_META } from '@shared/presenter'
+import { Agent, MODEL_META } from '@shared/presenter'
 import { onMounted, onUnmounted, ref, watch, computed } from 'vue'
 import { useChatStore } from '@/stores/chat'
 import { usePresenter } from '@/composables/usePresenter'
@@ -138,6 +138,16 @@ const searchStrategy = ref(chatStore.chatConfig.searchStrategy)
 const reasoningEffort = ref(chatStore.chatConfig.reasoningEffort)
 const verbosity = ref(chatStore.chatConfig.verbosity)
 const modelType = ref(ModelType.Chat)
+// Pinia 解包后直接返回值，保持 watch 能正确触发
+const selectedAgent = computed(() => chatStore.selectedAgent || null)
+const loadSystemPrompt = async (agent?: Agent | null) => {
+  try {
+    const prompt = await configPresenter.getDefaultSystemPrompt(agent || undefined)
+    systemPrompt.value = prompt
+  } catch (error) {
+    console.error('[TitleView] Failed to load system prompt', error)
+  }
+}
 // 获取模型配置来初始化默认值并智能调整当前参数
 const loadModelConfig = async () => {
   const modelId = chatStore.chatConfig.modelId
@@ -409,6 +419,14 @@ watch(
   { deep: true }
 )
 
+watch(
+  selectedAgent,
+  (agent) => {
+    loadSystemPrompt(agent)
+  },
+  { immediate: true }
+)
+
 type Model = {
   name: string
   id: string
diff --git a/src/shared/types/presenters/legacy.presenters.d.ts b/src/shared/types/presenters/legacy.presenters.d.ts
index ae6130c89ce804c05fba933cad211272a4ea0892..5597b6a8948613d8ba1cf80642eda11aad847211 100644
--- a/src/shared/types/presenters/legacy.presenters.d.ts
+++ b/src/shared/types/presenters/legacy.presenters.d.ts
@@ -476,7 +476,7 @@ export interface IConfigPresenter {
   updateCustomPrompt(promptId: string, updates: Partial<Prompt>): Promise<void>
   deleteCustomPrompt(promptId: string): Promise<void>
   // Default system prompt settings
-  getDefaultSystemPrompt(): Promise<string>
+  getDefaultSystemPrompt(agent?: Agent): Promise<string>
   setDefaultSystemPrompt(prompt: string): Promise<void>
   resetToDefaultPrompt(): Promise<void>
   clearSystemPrompt(): Promise<void>
@@ -521,6 +521,7 @@ export interface IConfigPresenter {
 
   // Agent management methods
   getAgents(): Promise<Agent[]>
+  getInstalledAgents(): Promise<Agent[]>
   setAgents(agents: Agent[]): Promise<void>
   addAgent(agent: Agent): Promise<void>
   installAgent(agentId: string): Promise<boolean>