Disclosed is a skin lesion area calculation method based on artificial intelligence recognition, comprising a recognition method for a lesion area and an area analysis method for the lesion area, therecognition method for the lesion area comprising identifying a lesion area from a lesion picture. Through the data acquisition of skin lesion images, the skin lesion area can be calculated intelligently and accurately. When used with APP or PC, the method is simple, convenient and easy to popularize.