Sexual life lasts more than three minutes is normal, less than three minutes may be the existence of premature ejaculation. Under normal circumstances, men have sex, as long as the duration of sexual life more than three minutes, it shows that men’s sexual function is relatively normal; three minutes within the phenomenon of ejaculation, that men have premature ejaculation. Occasionally, premature ejaculation may be related to mental and psychological factors, and after adjusting the psychological state, it can usually be recovered on its own. If premature ejaculation occurs frequently, it should be guarded against organic lesions, such as prepuce glans or prostatitis, which may be accompanied by perineal distension and pain, glans itching and tingling, and other symptoms. The frequent occurrence of premature ejaculation, accompanied by other abnormal manifestations, should be taken seriously, it is recommended to consult a doctor for examination and treatment.