diff --git a/mindspore/lite/src/common/log_util.h b/mindspore/lite/src/common/log_util.h
index 6321a3da847..0577c4af448 100644
--- a/mindspore/lite/src/common/log_util.h
+++ b/mindspore/lite/src/common/log_util.h
@@ -61,9 +61,18 @@
     }                                                                 \
   } while (0)
 
+#define CHECK_NOT_EQUAL_RETURN(size1, size2)                     \
+  do {                                                           \
+    if ((size1) != (size2)) {                                    \
+      MS_LOG(ERROR) << #size1 << " must be equal to " << #size2; \
+      return mindspore::lite::RET_ERROR;                         \
+    }                                                            \
+  } while (0)
+
 #else
 #define CHECK_NULL_RETURN(ptr)
 #define CHECK_NULL_RETURN_VOID(ptr)
 #define CHECK_LESS_RETURN(size1, size2)
+#define CHECK_NOT_EQUAL_RETURN(size1, size2)
 #endif
 #endif  // MINDSPORE_LITE_SRC_COMMON_LOG_UTIL_H_
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_self_fp32.cc b/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_self_fp32.cc
index d0f034fe979..fbf66319d0f 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_self_fp32.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_self_fp32.cc
@@ -60,8 +60,8 @@ ArithmeticSelfBoolFunc ArithmeticSelfCPUKernel::GetArithmeticSelfBoolFun(int pri
 }
 
 int ArithmeticSelfCPUKernel::Prepare() {
-  CHECK_LESS_RETURN(in_tensors_.size(), 1);
-  CHECK_LESS_RETURN(out_tensors_.size(), 1);
+  CHECK_NOT_EQUAL_RETURN(in_tensors_.size(), 1);
+  CHECK_NOT_EQUAL_RETURN(out_tensors_.size(), 1);
   if (!InferShapeDone()) {
     return RET_OK;
   }
diff --git a/mindspore/lite/src/scheduler.cc b/mindspore/lite/src/scheduler.cc
index 06f0195726e..de162c76313 100644
--- a/mindspore/lite/src/scheduler.cc
+++ b/mindspore/lite/src/scheduler.cc
@@ -148,6 +148,10 @@ int CopyConstTensorData(const std::vector<Tensor *> &tensors, int op_type) {
   }
   for (auto *tensor : tensors) {
     // only copy non-copied const tensor
+    if (!tensor->IsConst() && tensor->data() != nullptr) {
+      MS_LOG(ERROR) << "Illegitimate tensor : " << tensor->tensor_name();
+      continue;
+    }
     if (!tensor->IsConst() || tensor->own_data()) {
       continue;
     }