In order to improve the recognition rate of the frost and snow recognition system, a frost and snow recognition system powered by edge AI was designed. The design comprised the character of Hi3559A both excellent computation and low power consumption. The hardware used reduce power and resource consumption by Module reuse. For the software, by integrating the characteristics of the high computing power of Hisi, embedded processors Hi3559A and IMX334, and starting from model training, model quantization and model deployment, the author improved the MobileNetV2 image classification network and ISP adaptive processing algorithm. The final recognition rate reached 99.7%, pre-processing time reached 0.3s, image classification time reached 0.8s, module average power was 2W, and has its properties being robustness and stable. Hence，the Hi3559A intelligent phase machine module can effectively correct the inaccuracy of the data from the snow depth detector.