diff --git a/src/main/capabilities/office-aliases.test.ts b/src/main/capabilities/office-aliases.test.ts
index 454c431..2f5228d 100644
--- a/src/main/capabilities/office-aliases.test.ts
+++ b/src/main/capabilities/office-aliases.test.ts
@@ -65,4 +65,21 @@ describe("common Excel aliases", () => {
     const reopened = await run("Excel_OpenExcel", { filePath: created.path }) as { id: string };
     await expect(run("Excel_Cs_ReadContentV2", { workbook: reopened, sheet: "Sheet1", excelRng: "B2:C3" })).resolves.toEqual([[1, "壹"], [2, "贰"]]);
   });
+
+  it("saves as through the Excel_SaveAs catalog keys (filename/isAbsolutePath)", async () => {
+    const directory = await mkdtemp(path.join(os.tmpdir(), "rpa-excel-saveas-")); dirs.push(directory);
+    const created = await run("Excel_NewExcel", { filePath: directory, name: "origin.xlsx" }) as { path: string };
+    await run("Excel_WriteCell", { workbook: created, sheet: "Sheet1", row: 1, column: "A", content: "saveas" });
+    const savedAs = await run("Excel_SaveAs", { objExcel: created, filename: path.join(directory, "legacy-saveas.xlsx"), isAbsolutePath: "True" }) as { path: string };
+    expect(savedAs.path).toBe(path.resolve(directory, "legacy-saveas.xlsx"));
+    const reopened = await run("Excel_OpenExcel", { filePath: savedAs.path }) as { id: string };
+    await expect(run("Excel_Cs_ReadContentV2", { workbook: reopened, sheet: "Sheet1", excelRng: "A1" })).resolves.toEqual([["saveas"]]);
+  });
+
+  it("resolves a relative Excel_SaveAs filename against the original workbook directory", async () => {
+    const directory = await mkdtemp(path.join(os.tmpdir(), "rpa-excel-saveas-rel-")); dirs.push(directory);
+    const created = await run("Excel_NewExcel", { filePath: directory, name: "rel-origin.xlsx" }) as { path: string };
+    const savedAs = await run("Excel_SaveAs", { objExcel: created, filename: "rel-target.xlsx", isAbsolutePath: "False" }) as { path: string };
+    expect(savedAs.path).toBe(path.resolve(directory, "rel-target.xlsx"));
+  });
 });
diff --git a/src/main/capabilities/office.ts b/src/main/capabilities/office.ts
index 7532b48..134b06d 100644
--- a/src/main/capabilities/office.ts
+++ b/src/main/capabilities/office.ts
@@ -178,9 +178,11 @@ const saveExcel: CapabilityHandler = async (_ctx, node, args) => {
 
 const saveAsExcel: CapabilityHandler = async (_ctx, node, args) => {
   const { handle, workbook } = await resolveWorkbook(args, node.id, node.componentId);
-  const target = required(value(args, ["path", "file", "savePath"]), "另存为路径", node.id, node.componentId);
+  const raw = required(value(args, ["path", "file", "savePath", "filename", "saveFilePath"]), "另存为路径", node.id, node.componentId);
+  // Legacy Excel_SaveAs 用 isAbsolutePath 标记 filename 是否为绝对路径，相对路径基于原文件目录
+  const absolute = bool(value(args, ["isAbsolutePath"]), true);
   const previousPath = handle.path;
-  handle.path = path.resolve(target);
+  handle.path = absolute ? path.resolve(raw) : path.resolve(path.dirname(previousPath), raw);
   await fs.mkdir(path.dirname(handle.path), { recursive: true });
   await workbook.xlsx.writeFile(handle.path);
   // 另存后同一实例以新路径登记，旧路径的缓存不再代表最新内容，释放之