diff --git a/sot/opcode_translator/executor/variable_dispatch.py b/sot/opcode_translator/executor/variable_dispatch.py
index 7725ebaad..f3187b9e5 100644
--- a/sot/opcode_translator/executor/variable_dispatch.py
+++ b/sot/opcode_translator/executor/variable_dispatch.py
@@ -355,13 +355,25 @@
 )
 
 # isinstance
+Dispatcher.register(
+    isinstance,
+    ("TensorVariable", "VariableBase"),
+    {},
+    lambda left, right: ConstantVariable.wrap_literal(
+        isinstance(paddle.to_tensor(0), right.get_py_value(allow_tensor=True)),
+        left.graph,
+    ),
+)
+
 Dispatcher.register(
     isinstance,
     ("VariableBase", "VariableBase"),
     {},
     lambda left, right: ConstantVariable.wrap_literal(
-        left.get_py_type() == right.get_py_value()
-        or left.get_py_type() in right.get_py_value(),
+        isinstance(
+            left.get_py_value(allow_tensor=True),
+            right.get_py_value(allow_tensor=True),
+        ),
         left.graph,
     ),
 )