A touch on the ejaculation of possible reasons: a primary premature ejaculation, then there will be ejaculation time or latent ejaculation time is shorter, usually less than 60 seconds, and local nerve sensitivity is too high, and lack of control of ejaculation ability. Need to carry out the relevant nerve threshold measurement, after determining to give the dorsal penile nerve block surgical treatment, or give medication to deal with, observe the symptoms have not improved. Second, secondary premature ejaculation, the patient has had a normal ejaculation, but at a certain time or after the existence of local lesions, premature ejaculation. May be suffering from inflammation of the glans penis or the existence of the foreskin, prepuce, the existence of related mental and psychological factors, etc., need to go to the hospital for a detailed physical examination and psychological assessment, to take the symptomatic treatment method. If there is localized infection, anti-infection treatment is needed; if there is a long prepuce and prepuce which leads to high sensitivity of the glans and early ejaculation, circumcision surgery is needed; if there are mental and psychological factors, psychological counseling treatment is needed.