Minor injury refers to the injury that physical, chemical, biological and other external factors act on the human body, causing a certain degree of damage or partial dysfunction of tissues and organs, which does not constitute serious injury but does not belong to minor injury. Damage to limbs or appearance, dysfunction of hearing, vision or other organs, or other injuries with moderate damage to personal health, including minor injuries of Grade I and II. According to the relevant provisions of the Criminal Law of People's Republic of China (PRC), based on the theory and technology of medicine and forensic medicine, combined with the practical experience of judicial expertise, the standard of judicial expertise for minor injuries is formulated. The Appraisal Standard for Minor Injuries of Human Body was promulgated by the Supreme People's Procuratorate, the Supreme People's Court and Ministry of Justice of the People's Republic of China on 1 July, 9901day for trial implementation, including Chapter VI, Article 56. The determination of the degree of injury should be based on the primary injury and its direct consequences caused by external factors, including the injury at the time of injury, complications and sequelae caused by injury, etc. , comprehensive analysis and evaluation should be carried out.