Title: Mixed-Precision Inference Quantization: Radically Towards Faster inference speed,  Lower Storage requirement, and Lower Loss. Abstract: Model quantization is important for compressing models and improving computing speed.  However, current researchers think that the loss function of quantizated model is usually higher than full precision model. This study provides a methodology for acquiring a mixed-precise quantization model with a lower loss than the full precision model. In addition, the analysis demonstrates that, throughout the inference process, the loss function is mostly affected by the noise of the layer inputs. In particular, we will demonstrate that neural networks with massive identity mappings are resistant to the quantization method. It is also difficult to improve the performance of these networks using quantization.