The principle of skin detection is to detect skin spots from uploaded pictures by using artificial intelligence AI algorithm. In the process of uploading pictures, factors such as cell phone pixels and light will affect the judgment of AI algorithm, and the result is inaccurate. If the skin is abnormal, go to the dermatology department of a professional hospital for detailed examination and diagnosis. From the doctor's point of view, the skin detection function of WeChat can only be used as a reference.