diff --git a/packages/rpa-core/src/capabilities/word-extended.test.ts b/packages/rpa-core/src/capabilities/word-extended.test.ts
index 04996cc..5056881 100644
--- a/packages/rpa-core/src/capabilities/word-extended.test.ts
+++ b/packages/rpa-core/src/capabilities/word-extended.test.ts
@@ -56,4 +56,27 @@ describe("Word extended capabilities", () => {
     await run("Word_WriteTable", { objWord: handle, data: [["name", "age"], ["Alice", "30"]] });
     await expect(run("Word_ReadTable", { objWord: handle, find_type: "content", table_content: "Alice" })).resolves.toEqual([["name", "age"], ["Alice", "30"]]);
   }, 180000);
+
+  it("saves and saves-as a Word document through real COM", async () => {
+    if (process.platform !== "win32") return;
+    const directory = await mkdtemp(path.join(os.tmpdir(), "rpa-word-saveas-")); directories.push(directory);
+    const handle = await run("Word_New_V1", { filePath: directory, name: "source.docx" });
+    await run("Word_Write", { objWord: handle, text: "另存前内容" });
+
+    await expect(run("Word_Save", { objWord: handle })).resolves.toEqual({ path: path.join(directory, "source.docx") });
+    await expect(run("Word_Save", { objWord: { path: path.join(directory, "missing.docx") } })).rejects.toThrow("Word文件不存在");
+
+    const targetDir = path.join(directory, "out");
+    const saved = await run("Word_SaveAs", { objWord: handle, fileAddr: targetDir, filename: "renamed" }) as { path: string };
+    expect(saved.path).toBe(path.join(targetDir, "renamed.docx"));
+    await expect(readFile(saved.path)).resolves.toBeTruthy();
+
+    const kept = await run("Word_SaveAs", { objWord: saved, fileAddr: directory }) as { path: string };
+    expect(kept.path).toBe(path.join(directory, "renamed.docx"));
+    await expect(readFile(kept.path)).resolves.toBeTruthy();
+
+    const relative = await run("Word_SaveAs", { objWord: kept, fileAddr: "sub", filename: "rel-target" }) as { path: string };
+    expect(relative.path).toBe(path.join(directory, "sub", "rel-target.docx"));
+    await expect(readFile(relative.path)).resolves.toBeTruthy();
+  }, 180000);
 });
diff --git a/packages/rpa-core/src/capabilities/word.ts b/packages/rpa-core/src/capabilities/word.ts
index 5a5a086..b312d27 100644
--- a/packages/rpa-core/src/capabilities/word.ts
+++ b/packages/rpa-core/src/capabilities/word.ts
@@ -1,4 +1,5 @@
 import path from "node:path";
+import { access, mkdir } from "node:fs/promises";
 import { register } from "../engine/registry";
 import { powershell, psString } from "../driver/windows/powershell";
 
@@ -41,4 +42,31 @@ register("Word_Write", async (_ctx, _node, args) => {
   return { path: filePath } satisfies WordHandle;
 });
 
-register(["Word_Save", "Word_SaveAs"], async (_ctx, _node, args) => ({ path: handlePath(args) } satisfies WordHandle));
+async function ensureFile(value: string): Promise<string> {
+  try {
+    await access(value);
+  } catch {
+    throw new Error(`Word文件不存在: ${value}`);
+  }
+  return value;
+}
+
+register("Word_Save", async (_ctx, _node, args) => {
+  const filePath = await ensureFile(ensure(handlePath(args), "Word文件路径"));
+  // 打开即存：架构上每次操作独立开合 Word 实例，Save 负责兜底刷新并证明文件真实可写
+  await powershell(wordScript(`$doc = $word.Documents.Open(${psString(filePath)}); $doc.Save()`));
+  return { path: filePath } satisfies WordHandle;
+});
+
+register("Word_SaveAs", async (_ctx, _node, args) => {
+  const previousPath = await ensureFile(ensure(handlePath(args), "Word文件路径"));
+  const rawDir = text(args, ["fileAddr", "path", "folder", "savePath"]);
+  const rawName = text(args, ["filename", "name"]);
+  // 目录空缺沿用原目录；目录相对时基于原文档目录解析；文件名空缺沿用原名（与 catalog 语义一致）
+  const dir = rawDir ? path.resolve(path.dirname(previousPath), rawDir) : path.dirname(previousPath);
+  const target = path.resolve(dir, rawName || path.basename(previousPath));
+  const withExt = path.extname(target) ? target : `${target}.docx`;
+  await mkdir(path.dirname(withExt), { recursive: true });
+  await powershell(wordScript(`$doc = $word.Documents.Open(${psString(previousPath)}); $doc.SaveAs2(${psString(withExt)}); ${psString(withExt)}`));
+  return { path: withExt } satisfies WordHandle;
+});