diff --git a/src/interface/UIAF.ts b/src/interface/UIAF.ts
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+++ b/src/interface/UIAF.ts
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+/**
+ * @file UIAF.ts
+ * @description UIAF interface
+ * @author BTMuli<bt-muli@outlook.com>
+ * @see https://github.com/DGP-Studio/Snap.Genshin.Docs/blob/main/docs/development/UIAF.md
+ * @version v1.1
+ */
+/**
+ * @interface Achievements
+ * @description Achievements interface
+ * @property {UIAF_Info} info - UIAF info
+ * @property {UIAF_Achievement[]} list - Achievements data
+ * @return Achievements
+ */
+export interface Achievements {
+	info: UIAF_Info;
+	list: UIAF_Achievement[];
+}
+
+/**
+ * @interface UIAF_Info
+ * @description UIAF info interface
+ * @property {string} export_app - Export app name
+ * @property {number} export_timestamp - Export timestamp
+ * @property {string} export_app_version - Export app version
+ * @property {string} uiaf_version - UIAF version
+ * @return UIAF_Info
+ */
+export interface UIAF_Info {
+	export_app: string;
+	export_timestamp: number;
+	export_app_version: string;
+	uiaf_version: string;
+}
+
+/**
+ * @interface UIAF_Achievement
+ * @description Achievements data interface
+ * @property {number} id - Achievement ID
+ * @property {number} timestamp - Achievement timestamp
+ * @property {number} current - Current progress
+ * @property {number} status - Achievement status
+ * @return UIAF_Achievement
+ */
+export interface UIAF_Achievement {
+	id: number;
+	timestamp: number;
+	current: number;
+	status: number;
+}