Abstract: National occupational health standards——Diagnostic Criteria for Skin Cancer Induced by Radiation has been approved and issued by the Ministry of Health. Based on the extensive research of literature, systematic study of the relevant laws and regulations, this standard was enacted according to its making principles. This standard is mainly used for diagnosis of skin cancer induced by radiation accident and medical radiation. To implement this standard, and to diagnose and treat external radiation skin cancer patient correctly and promptly, the contents of this standard were interpreted in this article.