1, excessive masturbation: some habits before marriage, proper masturbation itself does not harm the body, on the contrary, it can release sexual impulses and play a certain balance role in the body. But excessive masturbation, or lack of correct understanding of masturbation, is considered harmful, leading to heavy mental burden and premature ejaculation.

2, mental stress: in the process of sexual life, premature ejaculation occasionally occurs, which is not surprising, but some people always think of the worst, worried that premature ejaculation will occur next time, or the wife did not take an understanding attitude, too much blame, resulting in mental stress, so that premature ejaculation will happen again.

3, excessive sexual excitement: Youth, often healthy, energetic, prone to sexual impulses, if you read some books or videos involving sex, excessive sexual desire and sexual impulses, so that the nerve center that controls ejaculation is extremely excited, leading to emotional excitement and premature ejaculation.