diff --git a/paddle/fluid/framework/ir/identity_op_clean_pass.cc b/paddle/fluid/framework/ir/identity_op_clean_pass.cc
index 720198576d8a88a8dd1adc21134532b779e24770..c9ca6270c13baab56ce3e4e93a79c5fb1166eb2d 100644
--- a/paddle/fluid/framework/ir/identity_op_clean_pass.cc
+++ b/paddle/fluid/framework/ir/identity_op_clean_pass.cc
@@ -58,7 +58,7 @@ void IdentityOpCleanPass::ApplyImpl(ir::Graph* graph) const {
             if (x->Op()->Type() == "scale") {
               auto scale = x->Op()->GetAttrIfExists<float>("scale");
               auto bias = x->Op()->GetAttrIfExists<float>("bias");
-              if (std::abs(bias) <= 1e-6 && std::abs(scale - 1) <= 1e-6) {
+              if (bias == 0 && scale == 1) {
                 return true;
               }
             }
diff --git a/paddle/fluid/inference/tensorrt/convert/scale_op.cc b/paddle/fluid/inference/tensorrt/convert/scale_op.cc
index 054964419d2d94a702f2f50c87bd595770701d61..d75eb4128b2e566236b5db4c06f630b839ff73b0 100644
--- a/paddle/fluid/inference/tensorrt/convert/scale_op.cc
+++ b/paddle/fluid/inference/tensorrt/convert/scale_op.cc
@@ -46,7 +46,7 @@ class ScaleOpConverter : public OpConverter {
           is_int ? Add1DConstantLayer(
                        static_cast<int>(bias > 0 ? bias + 0.5 : bias - 0.5))
                  : Add1DConstantLayer(bias);
-      bool is_bias_0 = (bias < 1e-06 && bias > -1e-06);
+      bool is_bias_0 = bias == 0;
 
       std::vector<int32_t> bias_shapes(input->getDimensions().nbDims, 1);
       auto* bias_shapes_tensor = Add1DConstantLayer(bias_shapes);
@@ -69,7 +69,7 @@ class ScaleOpConverter : public OpConverter {
         scale_tensor = is_int ? Add1DConstantLayer(static_cast<int>(
                                     scale > 0 ? scale + 0.5 : scale - 0.5))
                               : Add1DConstantLayer(scale);
-        is_scale_1 = ((scale - 1.0) < 1e-06 && (scale - 1.0) > -1e-06);
+        is_scale_1 = scale == 1;
       }
 
       std::vector<int32_t> scale_shapes(input->getDimensions().nbDims, 1);