diff --git a/src/elderly/types/xmov.d.ts b/src/elderly/types/xmov.d.ts
new file mode 100644
index 0000000..42b5467
--- /dev/null
+++ b/src/elderly/types/xmov.d.ts
@@ -0,0 +1,48 @@
+/**
+ * XmovAvatar SDK TypeScript Type Definitions
+ */
+
+export interface XmovConfig {
+  appId: string;
+  appSecret: string;
+  gatewayServer?: string;
+}
+
+export interface XmovSDKOptions {
+  containerId: string;
+  appId: string;
+  appSecret: string;
+  gatewayServer: string;
+  onWidgetEvent?: (data: any) => void;
+  onNetworkInfo?: (networkInfo: any) => void;
+  onMessage?: (message: any) => void;
+  onStateChange?: (state: string) => void;
+  onStatusChange?: (status: string) => void;
+  onStateRenderChange?: (state: string, duration: number) => void;
+  onVoiceStateChange?: (status: 'start' | 'end') => void;
+  enableLogger?: boolean;
+}
+
+export interface XmovInitOptions {
+  onDownloadProgress?: (progress: number) => void;
+  onError?: (error: any) => void;
+  onClose?: () => void;
+}
+
+export interface XmovAvatarSDK {
+  init(options: XmovInitOptions): Promise<void>;
+  speak(text: string, isFirst: boolean, isEnd: boolean): void;
+  think(): void;
+  interactiveIdle(): void;
+  offlineMode(): void;
+  onlineMode(): void;
+  destroy(): void;
+}
+
+declare global {
+  interface Window {
+    XmovAvatar: new (options: XmovSDKOptions) => XmovAvatarSDK;
+  }
+}
+
+export {};