diff --git a/lite/backends/arm/math/pooling.cc b/lite/backends/arm/math/pooling.cc
index aaa9b9ff4c9800be6743863fab17633eb5a1c4c2..3e6cbff0660be8f2542d059a39115bed52122ff1 100644
--- a/lite/backends/arm/math/pooling.cc
+++ b/lite/backends/arm/math/pooling.cc
@@ -2701,7 +2701,9 @@ void pooling3x3s2p0_avg(const float* din,
     w_unroll_size -= 1;
     w_unroll_remian = wout - w_unroll_size * 4;
   }
-
+  //  do overflow process
+  w_unroll_size -= 1;
+  w_unroll_remian += 4;
   auto zero_ptr =
       static_cast<float*>(TargetMalloc(TARGET(kARM), win * sizeof(float)));
   memset(zero_ptr, 0, win * sizeof(float));