diff --git a/Tools/ModelTranslator/rizom_unwrap.py b/Tools/ModelTranslator/rizom_unwrap.py
index 09e8d44a..5326851e 100644
--- a/Tools/ModelTranslator/rizom_unwrap.py
+++ b/Tools/ModelTranslator/rizom_unwrap.py
@@ -91,16 +91,32 @@ def _call(label, fn, params, timeout=TIMEOUT_S):
     return res
 
 
+RETRY = 1   # 实例级重试次数：RizomUV IPC 有 2000ms 内部响应窗，偶发 not responding
+
+
 def rizom_unwrap(fbx_path, exe, map_res=MAP_RES, padding_px=PADDING_PX):
-    """AutoSeam 全自动切缝 -> Unfold -> Pack -> 覆盖保存 fbx_path。失败抛 RizomError。"""
+    """AutoSeam 全自动切缝 -> Unfold -> Pack -> 覆盖保存 fbx_path。失败抛 RizomError。
+    间歇性 IPC 失败自动换新实例重试一次。"""
     mod = _import_link(exe)
+    fbx_abs = os.path.abspath(fbx_path)
+    pad_uv = float(padding_px) / map_res
+    last = None
+    for attempt in range(1 + RETRY):
+        if attempt:
+            print("[警告] RizomUV 第 %d 次失败（%s），换新实例重试" % (attempt, last))
+        try:
+            return _unwrap_once(mod, exe, fbx_abs, map_res, pad_uv)
+        except RizomError as e:
+            last = e
+    raise RizomError("重试后仍失败：%s" % last)
+
+
+def _unwrap_once(mod, exe, fbx_abs, map_res, pad_uv):
     link = mod.CRizomUVLink()
     try:
         _call("RunRizomUV", lambda _p: link.RunRizomUV(exePath=exe), None, timeout=60)
     except RizomError as e:
         raise RizomError("RizomUV 启动失败（license/环境）：%s" % e)
-    fbx_abs = os.path.abspath(fbx_path)
-    pad_uv = float(padding_px) / map_res
     try:
         _call("Load", link.Load, {"File.Path": fbx_abs, "File.XYZ": True})
         # AutoSeam：MOSAIC(QuasiDevelopable) + 切柄/连洞 + 防重叠后处理
diff --git a/Tools/ModelTranslator/tests/test_rizom_unwrap.py b/Tools/ModelTranslator/tests/test_rizom_unwrap.py
index 59908c5b..a8443965 100644
--- a/Tools/ModelTranslator/tests/test_rizom_unwrap.py
+++ b/Tools/ModelTranslator/tests/test_rizom_unwrap.py
@@ -50,5 +50,27 @@ class TestCall(unittest.TestCase):
         self.assertEqual(ru._call("Ok", lambda p: {"Data": 1}, {}), {"Data": 1})
 
 
+class TestRetry(unittest.TestCase):
+    def test_second_attempt_succeeds(self):
+        calls = []
+
+        def fake_once(*a, **kw):
+            calls.append(1)
+            if len(calls) == 1:
+                raise ru.RizomError("IPC 抖动")
+
+        with mock.patch.object(ru, "_import_link"), \
+             mock.patch.object(ru, "_unwrap_once", side_effect=fake_once):
+            ru.rizom_unwrap("x.fbx", "rizomuv.exe")
+        self.assertEqual(len(calls), 2)
+
+    def test_both_attempts_fail_raises(self):
+        with mock.patch.object(ru, "_import_link"), \
+             mock.patch.object(ru, "_unwrap_once",
+                               side_effect=ru.RizomError("持续失败")), \
+             self.assertRaises(ru.RizomError):
+            ru.rizom_unwrap("x.fbx", "rizomuv.exe")
+
+
 if __name__ == "__main__":
     unittest.main()