diff --git a/src/helper/nest.ts b/src/helper/nest.ts
new file mode 100644
index 0000000..e767ec8
--- /dev/null
+++ b/src/helper/nest.ts
@@ -0,0 +1,44 @@
+/**
+ * 获取 obj 中路径 path 对应的值。
+ * 支持路径中的数组：如果在前一层得到数组，则对该数组中每个元素进一步取值。
+ * @param obj 任意对象或数组
+ * @param path 点分隔路径（例如 "a.b.c" 或 "translations.name"）
+ * @returns 如果结果仅一个值，返回该值；如果多个，返回值数组；如果无值，返回 undefined。
+ * 
+ * ---
+ * @example
+ * const data = {
+ *  translations: [
+ *    { languages_code: 'zh-CN', name: '中文' },
+ *    { languages_code: 'en-US', name: 'English' }
+ *  ]
+ * };
+ * 
+ * getNestedProperty(data, 'translations.name');
+ * // 返回 ['中文', 'English']
+ */
+export function getNestedProperty<T>(obj: unknown, path: string): T | T[] | undefined {
+    const parts = path.split('.');
+
+    function dive(current: unknown, index: number): unknown {
+        if (current == null) return undefined;
+        if (index >= parts.length) return current;
+
+        const key = parts[index];
+        if (!key) return undefined;
+
+        if (Array.isArray(current)) {
+            return current.map((item) => dive(item, index));
+        }
+
+        if (typeof current === 'object') {
+            const value = (current as Record<string, unknown>)[key];
+            return dive(value, index + 1);
+        }
+
+        return undefined;
+    }
+
+    const result = dive(obj, 0);
+    return result as T | T[] | undefined;
+}
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