Sex life time generally refers to the time from penis insertion into the vagina to ejaculation, and a normal Chinese male’s sex life is usually between 5 and 20 minutes. The duration of sex life is affected by many factors, including race, age, physical condition, whether they drink alcohol, take medication, etc. Even psychological factors can affect the duration of sex life. The average duration of a man’s sex life is usually between 5 and 20 minutes, and it is not normal for sex to be too short or too long. If the sexual life time is less than 3 minutes belongs to premature ejaculation. Sex time is too long, does not mean that the quality of sex life is improved. If the time is more than 30 minutes and still can’t finish sex life, it belongs to non-ejaculation, which is a kind of sexual life disorder. Men can improve the quality of sex life by strengthening exercise, maintaining good living and dietary habits, and practicing anal lifting exercises. For patients with premature ejaculation, they should go to a male doctor in time for appropriate treatment.