"Multi-parameter active terahertz imaging technology for early diagnosis of skin cancer" aims at high precision and safety. Skin tissues can be imaged by terahertz detection technology for precise diagnosis. Electronic-based multi-parameter reflective imaging method is researched to detect skin cancer non- invasively. The electromagnetic skin information is combined with the specific physical scale and characteristics of cancerous tissues to analyze the response of electromagnetic wave. The fusion of signal processing technology and innovative signal processing technology, recently radar detection and infrared detection, will be explored. Two- and three- dimensional imaging technologies which can effectively detect the cancerous tissues will be developed by using the improved terahertz technology for the image analysis of skin tissues. The two and three- dimensional imaging technologies will be compared with current international biomedicine level. An early and accurate method for the diagnosis of skin cancer will be concluded. The scientific research of this project will make much contribution for the treatment of skin cancer.