diff --git a/apps/desktop/electron/electron-env.d.ts b/apps/desktop/electron/electron-env.d.ts
index c92ef48a..006b28f0 100644
--- a/apps/desktop/electron/electron-env.d.ts
+++ b/apps/desktop/electron/electron-env.d.ts
@@ -68,6 +68,7 @@ interface SkillAddResult {
 interface ProfileData {
   profileId: string | undefined
   name: string | undefined
+  style: string | undefined
   userContent: string | undefined
 }
 
@@ -106,6 +107,7 @@ interface ElectronAPI {
   profile: {
     get: () => Promise<ProfileData>
     updateName: (name: string) => Promise<unknown>
+    updateStyle: (style: string) => Promise<unknown>
     updateUser: (content: string) => Promise<unknown>
   }
 }
diff --git a/apps/desktop/electron/ipc/profile.ts b/apps/desktop/electron/ipc/profile.ts
index ed30130f..d6dd4dac 100644
--- a/apps/desktop/electron/ipc/profile.ts
+++ b/apps/desktop/electron/ipc/profile.ts
@@ -25,6 +25,7 @@ function getDefaultAgent() {
 export interface ProfileData {
   profileId: string | undefined
   name: string | undefined
+  style: string | undefined
   userContent: string | undefined
 }
 
@@ -41,6 +42,7 @@ export function registerProfileIpcHandlers(): void {
       return {
         profileId: undefined,
         name: undefined,
+        style: undefined,
         userContent: undefined,
       }
     }
@@ -48,6 +50,7 @@ export function registerProfileIpcHandlers(): void {
     return {
       profileId: agent.getProfileId(),
       name: agent.getAgentName(),
+      style: agent.getAgentStyle(),
       userContent: agent.getUserContent(),
     }
   })
@@ -88,4 +91,20 @@ export function registerProfileIpcHandlers(): void {
 
     return { ok: true }
   })
+
+  /**
+   * Update agent communication style.
+   */
+  ipcMain.handle('profile:updateStyle', async (_event, style: string) => {
+    const agent = getDefaultAgent()
+    if (!agent) {
+      return { error: 'No agent available' }
+    }
+
+    agent.setAgentStyle(style)
+    // Reload system prompt to apply changes immediately
+    agent.reloadSystemPrompt()
+
+    return { ok: true, style }
+  })
 }
diff --git a/apps/desktop/electron/preload.ts b/apps/desktop/electron/preload.ts
index e0afbf9a..73152aad 100644
--- a/apps/desktop/electron/preload.ts
+++ b/apps/desktop/electron/preload.ts
@@ -40,9 +40,14 @@ export interface SkillInfo {
 export interface ProfileData {
   profileId: string | undefined
   name: string | undefined
+  style: string | undefined
   userContent: string | undefined
 }
 
+// Available style options
+export const AGENT_STYLES = ['concise', 'warm', 'playful', 'professional'] as const
+export type AgentStyle = (typeof AGENT_STYLES)[number]
+
 // ============================================================================
 // Expose typed API to Renderer process
 // ============================================================================
@@ -95,6 +100,7 @@ const electronAPI = {
   profile: {
     get: (): Promise<ProfileData> => ipcRenderer.invoke('profile:get'),
     updateName: (name: string) => ipcRenderer.invoke('profile:updateName', name),
+    updateStyle: (style: string) => ipcRenderer.invoke('profile:updateStyle', style),
     updateUser: (content: string) => ipcRenderer.invoke('profile:updateUser', content),
   },
 }
diff --git a/apps/desktop/src/components/agent-settings-dialog.tsx b/apps/desktop/src/components/agent-settings-dialog.tsx
index 3f44d548..5414a7c2 100644
--- a/apps/desktop/src/components/agent-settings-dialog.tsx
+++ b/apps/desktop/src/components/agent-settings-dialog.tsx
@@ -12,7 +12,15 @@ import { Input } from '@multica/ui/components/ui/input'
 import { Textarea } from '@multica/ui/components/ui/textarea'
 import { Label } from '@multica/ui/components/ui/label'
 import { HugeiconsIcon } from '@hugeicons/react'
-import { Loading03Icon } from '@hugeicons/core-free-icons'
+import { Loading03Icon, Tick02Icon } from '@hugeicons/core-free-icons'
+
+// Style options with labels
+const STYLE_OPTIONS = [
+  { value: 'concise', label: 'Concise', description: 'Brief and to the point' },
+  { value: 'warm', label: 'Warm', description: 'Friendly and approachable' },
+  { value: 'playful', label: 'Playful', description: 'Fun and lighthearted' },
+  { value: 'professional', label: 'Professional', description: 'Formal and business-like' },
+] as const
 
 interface AgentSettingsDialogProps {
   open: boolean
@@ -23,8 +31,8 @@ export function AgentSettingsDialog({ open, onOpenChange }: AgentSettingsDialogP
   const [loading, setLoading] = useState(false)
   const [saving, setSaving] = useState(false)
   const [name, setName] = useState('')
+  const [style, setStyle] = useState<string>('concise')
   const [userContent, setUserContent] = useState('')
-  const [profileId, setProfileId] = useState<string | undefined>()
 
   // Load profile data when dialog opens
   useEffect(() => {
@@ -37,8 +45,8 @@ export function AgentSettingsDialog({ open, onOpenChange }: AgentSettingsDialogP
     setLoading(true)
     try {
       const data = await window.electronAPI.profile.get()
-      setProfileId(data.profileId)
       setName(data.name ?? '')
+      setStyle(data.style ?? 'concise')
       setUserContent(data.userContent ?? '')
     } catch (err) {
       console.error('Failed to load profile:', err)
@@ -52,6 +60,8 @@ export function AgentSettingsDialog({ open, onOpenChange }: AgentSettingsDialogP
     try {
       // Update name if changed
       await window.electronAPI.profile.updateName(name)
+      // Update style
+      await window.electronAPI.profile.updateStyle(style)
       // Update user content
       await window.electronAPI.profile.updateUser(userContent)
       onOpenChange(false)
@@ -68,7 +78,7 @@ export function AgentSettingsDialog({ open, onOpenChange }: AgentSettingsDialogP
         <DialogHeader>
           <DialogTitle>Edit Agent</DialogTitle>
           <DialogDescription>
-            Customize your agent's name and personal settings.
+            Customize your agent's name, style and personal settings.
           </DialogDescription>
         </DialogHeader>
 
@@ -78,13 +88,6 @@ export function AgentSettingsDialog({ open, onOpenChange }: AgentSettingsDialogP
           </div>
         ) : (
           <div className="space-y-4">
-            {/* Profile ID (read-only) */}
-            {profileId && (
-              <div className="text-xs text-muted-foreground">
-                Profile: {profileId}
-              </div>
-            )}
-
             {/* Name */}
             <div className="space-y-2">
               <Label htmlFor="agent-name">Name</Label>
@@ -96,6 +99,35 @@ export function AgentSettingsDialog({ open, onOpenChange }: AgentSettingsDialogP
               />
             </div>
 
+            {/* Style */}
+            <div className="space-y-2">
+              <Label>Communication Style</Label>
+              <div className="grid grid-cols-2 gap-2">
+                {STYLE_OPTIONS.map((option) => (
+                  <button
+                    key={option.value}
+                    type="button"
+                    onClick={() => setStyle(option.value)}
+                    className={`relative flex flex-col items-start rounded-lg border p-3 text-left transition-colors hover:bg-accent ${
+                      style === option.value
+                        ? 'border-primary bg-primary/5'
+                        : 'border-border'
+                    }`}
+                  >
+                    <div className="flex w-full items-center justify-between">
+                      <span className="font-medium text-sm">{option.label}</span>
+                      {style === option.value && (
+                        <HugeiconsIcon icon={Tick02Icon} className="size-4 text-primary" />
+                      )}
+                    </div>
+                    <span className="text-xs text-muted-foreground mt-0.5">
+                      {option.description}
+                    </span>
+                  </button>
+                ))}
+              </div>
+            </div>
+
             {/* User Content */}
             <div className="space-y-2">
               <Label htmlFor="user-content">About You</Label>
@@ -107,7 +139,7 @@ export function AgentSettingsDialog({ open, onOpenChange }: AgentSettingsDialogP
                 value={userContent}
                 onChange={(e) => setUserContent(e.target.value)}
                 placeholder="- I'm a frontend developer&#10;- I prefer TypeScript&#10;- Please respond in Chinese"
-                className="min-h-[160px] font-mono text-sm"
+                className="min-h-[120px] font-mono text-sm"
               />
             </div>
           </div>