diff --git a/mindspore/python/mindspore/nn/cell.py b/mindspore/python/mindspore/nn/cell.py
index 4da84153091..61c7c7c997e 100755
--- a/mindspore/python/mindspore/nn/cell.py
+++ b/mindspore/python/mindspore/nn/cell.py
@@ -1069,7 +1069,7 @@ class Cell(Cell_):
         """
         if not child_name or '.' in child_name:
             raise KeyError("For 'insert_child_to_cell', the argument 'child_name' should not be None and "
-                           "should not contain \".\"")
+                           "should not contain '.'")
         if hasattr(self, child_name) and child_name not in self._cells:
             raise KeyError("For 'insert_child_to_cell', the {} child cell already exists in the network. Cannot "
                            "insert another child cell with the same name.".format(child_name))