diff --git a/mindspore/ccsrc/backend/kernel_compiler/gpu/nn/conv3d_gpu_kernel.h b/mindspore/ccsrc/backend/kernel_compiler/gpu/nn/conv3d_gpu_kernel.h
index bc788bd9f60..1d5b751889d 100644
--- a/mindspore/ccsrc/backend/kernel_compiler/gpu/nn/conv3d_gpu_kernel.h
+++ b/mindspore/ccsrc/backend/kernel_compiler/gpu/nn/conv3d_gpu_kernel.h
@@ -320,9 +320,6 @@ class Conv3dGpuKernel : public GpuKernel {
                                              output_desc_, requested_algo_count, &returned_algo_count, &perf_results),
       "cudnnGetConvolutionForwardAlgorithm_v7 failed");
     conv_algorithm_ = perf_results.algo;
-    if (cudnn_data_type_ == CUDNN_DATA_HALF) {
-      conv_algorithm_ = CUDNN_CONVOLUTION_FWD_ALGO_IMPLICIT_PRECOMP_GEMM;
-    }
   }
 
   void SetStrideAndDilation(const CNodePtr &kernel_node) {
diff --git a/mindspore/ccsrc/backend/kernel_compiler/gpu/nn/conv3d_grad_input_gpu_kernel.h b/mindspore/ccsrc/backend/kernel_compiler/gpu/nn/conv3d_grad_input_gpu_kernel.h
index 4a0175b7997..15020b4edd1 100644
--- a/mindspore/ccsrc/backend/kernel_compiler/gpu/nn/conv3d_grad_input_gpu_kernel.h
+++ b/mindspore/ccsrc/backend/kernel_compiler/gpu/nn/conv3d_grad_input_gpu_kernel.h
@@ -297,9 +297,6 @@ class Conv3dGradInputGpuKernel : public GpuKernel {
                                                   requested_algo_count, &returned_algo_count, &perf_results),
       "cudnnGetConvolutionBackwardDataAlgorithm_v7 failed");
     algo_ = perf_results.algo;
-    if (cudnn_data_type_ == CUDNN_DATA_HALF) {
-      algo_ = CUDNN_CONVOLUTION_BWD_DATA_ALGO_1;
-    }
   }
 
   void GetInputShape(const CNodePtr &kernel_node, std::vector<size_t> *input_shape) {