To investigate the prevalence of adolescent self-harm behavior in Wuhan.Using the adolescent self-harm behavior scale, 1395 middle school students from 13 middle schools of Wuhan were surveyed according to purposive sampling and cluster sampling.The incidence rate of self-harm is 57.4%; 64.3% autolesionists fist used the self-harm mode among 12 to 15 years old, the average age is 12.35.The gender difference isn't significant.48.2% autolesionists use several ways to self-harm, and the rate of repeated incidence is every high.According the el...