diff --git a/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_fp16.cc b/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_fp16.cc
index 52dce32804..f28d0220b0 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_fp16.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_fp16.cc
@@ -264,6 +264,4 @@ kernel::LiteKernel *CpuDeConvFp16KernelCreator(const std::vector<lite::Tensor *>
   }
   return kernel;
 }
-
-REG_KERNEL(kCPU, kNumberTypeFloat16, PrimitiveType_DeConv2D, CpuDeConvFp16KernelCreator)
 }  // namespace mindspore::kernel
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_winograd_fp16.cc b/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_winograd_fp16.cc
index b261045e80..815de47d62 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_winograd_fp16.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_winograd_fp16.cc
@@ -99,6 +99,11 @@ void DeConvWinogradFp16CPUKernel::FreeDeconvParam() {
     }
   }
 
+  if (deconv_param_->compute_units_ != nullptr) {
+    free(deconv_param_->compute_units_);
+    deconv_param_->compute_units_ = nullptr;
+  }
+
   if (deconv_param_ != nullptr) {
     delete (deconv_param_);
     deconv_param_ = nullptr;
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_winograd_fp16.h b/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_winograd_fp16.h
index bcbca65043..45b1c6cc98 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_winograd_fp16.h
+++ b/mindspore/lite/src/runtime/kernel/arm/fp16/deconvolution_winograd_fp16.h
@@ -34,6 +34,8 @@ class DeConvWinogradFp16CPUKernel : public ConvolutionBaseFP16CPUKernel {
     deconv_param_ = new DeConvParam();
     for (auto &wg : deconv_param_->a_buffer_) {
       wg.buf_init_ = false;
+      wg.dest_buffer_ = nullptr;
+      wg.middle_buffer_ = nullptr;
     }
   }
   ~DeConvWinogradFp16CPUKernel() override;
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32/deconvolution_winograd.cc b/mindspore/lite/src/runtime/kernel/arm/fp32/deconvolution_winograd.cc
index 5e2d3760f0..41e2e871f5 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32/deconvolution_winograd.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32/deconvolution_winograd.cc
@@ -88,6 +88,11 @@ void DeConvolutionWinogradCPUKernel::FreeDeconvParam() {
     }
   }
 
+  if (deconv_param_->compute_units_ != nullptr) {
+    free(deconv_param_->compute_units_);
+    deconv_param_->compute_units_ = nullptr;
+  }
+
   if (deconv_param_ != nullptr) {
     delete (deconv_param_);
     deconv_param_ = nullptr;
diff --git a/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_int8.cc b/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_int8.cc
index eb6d88455f..5b30b09ada 100644
--- a/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_int8.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/int8/deconvolution_int8.cc
@@ -103,13 +103,13 @@ void DeConvInt8CPUKernel::CheckSupportOptimize() {
     if (dlopen_error != nullptr) {
       MS_LOG(ERROR) << "load matmul func failed! " << dlopen_error << ".";
       support_optimize_ = false;
-      matmul_func_ = nullptr;
+      matmul_func_ = MatMulR4Int8Neon64;
     } else {
       support_optimize_ = true;
     }
   } else {
     support_optimize_ = false;
-    matmul_func_ = nullptr;
+    matmul_func_ = MatMulR4Int8Neon64;
   }
 #endif
   return;