diff --git a/docs/FreeCAD 端子显示连线保存回写开发文档.md b/docs/FreeCAD 端子显示连线保存回写开发文档.md
index 7208208..51899f5 100644
--- a/docs/FreeCAD 端子显示连线保存回写开发文档.md	
+++ b/docs/FreeCAD 端子显示连线保存回写开发文档.md	
@@ -573,4 +573,5 @@ ManualWiring.py
 - 2026-05-20：明确 A 方案：STEP/STP/STE 只作为原始几何输入，正式可复用设备资源统一保存为带 LCS 电气端子的 FCStd 模板；后续设计 `TemplateAuthoring.py` 做模板制作工具。
 - 2026-05-20：新增 FCStd 设备模板制作基础能力，支持把模型上的点位创建为带 `Role="Terminal"`、`CanWire=true`、`QetTemplateSlotName` 的模板端子 LCS；已用单元测试验证端子语义写入和模板校验逻辑。
 - 2026-05-20：补充 A 方案资产流转设计，明确 `.FCStd` 为正式设备资产；zwl/QET 只负责选择、保存、导出 `.FCStd` 路径，FreeCADExchange 负责读取 LCS 端子语义并生成工程端子。
+- 2026-05-20：补上 `QET_Template_SaveAsFCStd` 模板保存命令，保存前会校验至少存在一个有效模板端子，并自动补 `.FCStd` 后缀；已用单元测试验证保存路径和端子校验结果。
 ```
diff --git a/src/Mod/FreeCADExchange/TemplateAuthoring.py b/src/Mod/FreeCADExchange/TemplateAuthoring.py
index 1abd26c..a4c4a7b 100644
--- a/src/Mod/FreeCADExchange/TemplateAuthoring.py
+++ b/src/Mod/FreeCADExchange/TemplateAuthoring.py
@@ -7,6 +7,17 @@ try:
 except ImportError:
     Gui = None
 
+try:
+    from PySide6 import QtWidgets
+except ImportError:
+    try:
+        from PySide2 import QtWidgets
+    except ImportError:
+        try:
+            from PySide import QtGui as QtWidgets
+        except ImportError:
+            QtWidgets = None
+
 import TerminalObjects
 
 
@@ -151,6 +162,35 @@ def validate_template_terminals(doc):
     return report
 
 
+def _fcstd_path(path):
+    value = (path or "").strip()
+    if not value:
+        raise TemplateAuthoringError("A target FCStd path is required.")
+    if not value.lower().endswith(".fcstd"):
+        value = value + ".FCStd"
+    return value
+
+
+def save_template_as_fcstd(doc, path):
+    if doc is None:
+        raise TemplateAuthoringError("An active FreeCAD document is required.")
+
+    target_path = _fcstd_path(path)
+    report = validate_template_terminals(doc)
+    if report["total_terminals"] <= 0:
+        raise TemplateAuthoringError("At least one template terminal is required before saving.")
+    if report["warnings"]:
+        raise TemplateAuthoringError(
+            "Template terminals must be valid before saving: {0}".format(
+                "; ".join(report["warnings"])
+            )
+        )
+
+    doc.saveAs(target_path)
+    report["path"] = target_path
+    return report
+
+
 def _selection_position():
     if Gui is None:
         return None
@@ -236,6 +276,44 @@ class CommandValidateTemplateTerminals:
             App.Console.PrintWarning("[FreeCADExchange] {0}\n".format(warning))
 
 
+class CommandSaveTemplateAsFCStd:
+    def GetResources(self):
+        return {
+            "MenuText": "Save Template As FCStd",
+            "ToolTip": "Validate and save the current document as a reusable FCStd equipment template",
+        }
+
+    def IsActive(self):
+        return App.ActiveDocument is not None
+
+    def Activated(self):
+        if QtWidgets is None:
+            App.Console.PrintError("[FreeCADExchange] Qt file dialog is not available.\n")
+            return
+
+        file_path, _selected_filter = QtWidgets.QFileDialog.getSaveFileName(
+            None,
+            "Save FCStd Equipment Template",
+            "",
+            "FreeCAD template (*.FCStd *.fcstd);;All files (*.*)",
+        )
+        if not file_path:
+            return
+
+        try:
+            report = save_template_as_fcstd(App.ActiveDocument, file_path)
+            App.Console.PrintMessage(
+                "[FreeCADExchange] Saved FCStd template: {0} ({1} terminals)\n".format(
+                    report["path"],
+                    report["valid_terminals"],
+                )
+            )
+        except Exception as exc:
+            App.Console.PrintError(
+                "[FreeCADExchange] template save failed: {0}\n".format(exc)
+            )
+
+
 _COMMANDS_REGISTERED = False
 
 
@@ -247,6 +325,7 @@ def register_commands():
         return
     Gui.addCommand("QET_Template_AddTerminal", CommandAddTemplateTerminal())
     Gui.addCommand("QET_Template_ValidateTerminals", CommandValidateTemplateTerminals())
+    Gui.addCommand("QET_Template_SaveAsFCStd", CommandSaveTemplateAsFCStd())
     _COMMANDS_REGISTERED = True
 
 
diff --git a/tests/python/freecad_exchange_template_authoring_test.py b/tests/python/freecad_exchange_template_authoring_test.py
index bdb1722..52c401a 100644
--- a/tests/python/freecad_exchange_template_authoring_test.py
+++ b/tests/python/freecad_exchange_template_authoring_test.py
@@ -88,6 +88,7 @@ class FakeDocument:
         self.Name = "TemplateDoc"
         self.Objects = []
         self.recomputed = False
+        self.saved_path = ""
 
     def addObject(self, type_name, name):
         obj = FakeObject(name, type_name)
@@ -103,6 +104,9 @@ class FakeDocument:
     def recompute(self):
         self.recomputed = True
 
+    def saveAs(self, path):
+        self.saved_path = path
+
 
 def _reload_modules():
     for name in ["TerminalObjects", "TemplateAuthoring"]:
@@ -158,6 +162,19 @@ class TemplateAuthoringTest(unittest.TestCase):
         self.assertEqual(1, len(report["warnings"]))
         self.assertIn("QetTemplateSlotName", report["warnings"][0])
 
+    def test_save_template_as_fcstd_adds_extension_and_saves_valid_template(self):
+        _install_fake_freecad()
+        template_authoring = _reload_modules()
+        app = sys.modules["FreeCAD"]
+        doc = FakeDocument()
+        template_authoring.create_template_terminal(doc, "P1", app.Vector(1, 2, 3))
+
+        report = template_authoring.save_template_as_fcstd(doc, "D:/tmp/current-transformer")
+
+        self.assertEqual("D:/tmp/current-transformer.FCStd", doc.saved_path)
+        self.assertEqual("D:/tmp/current-transformer.FCStd", report["path"])
+        self.assertEqual(1, report["valid_terminals"])
+
 
 if __name__ == "__main__":
     unittest.main()