diff --git a/mmcv/ops/csrc/pytorch/mlu/ms_deform_attn_mlu.cpp b/mmcv/ops/csrc/pytorch/mlu/ms_deform_attn_mlu.cpp
index e54e8669f2..ca1527a045 100644
--- a/mmcv/ops/csrc/pytorch/mlu/ms_deform_attn_mlu.cpp
+++ b/mmcv/ops/csrc/pytorch/mlu/ms_deform_attn_mlu.cpp
@@ -324,6 +324,18 @@ Tensor ms_deform_attn_mlu_forward(const Tensor& value,
           (char*)output_ptr);
       break;
     }
+    case MS_DEFORM_ATTN_FORWARD_FAST: {
+      CNLOG(INFO) << "Launch Kernel MLUKernelMsDeformAttnForwardFast<<<"
+                  << k_dim.x << ", " << k_dim.y << ", " << k_dim.z << ">>>";
+      KernelMsDeformAttnForwardFast(
+          k_dim, k_type, queue, data_type, (char*)value_ptr,
+          (char*)spatial_shapes_ptr, (char*)level_start_index_ptr,
+          (char*)sampling_loc_ptr, (char*)attn_weight_ptr, batch_size, num_keys,
+          num_heads, channels, num_levels, num_queries, num_points,
+          (char*)output_ptr);
+      break;
+    }
+
   }
 
   output = output.view({batch_size, num_queries, num_heads * channels});