Uncontrolled ejaculation may be caused by excessive masturbation, psychological factors, ejaculation disorders and other reasons. 1. Masturbation: Masturbation is a method of masturbation, but if you masturbate excessively for a long period of time, you will damage your penis, and it will also cause your body to become weak, and it will even have a certain impact on your psyche, and it may also induce prostatitis, urinary tract infections and other illnesses, which will cause erectile dysfunction, and the situation of uncontrolled ejaculation will occur. 2. Psychological factors: excessive mental tension and emotional excitement during the first sexual intercourse may also lead to uncontrolled ejaculation. 3. Ejaculation disorders: overindulgence, poor relationship between husband and wife, or over-sensitive glans can cause ejaculation dysfunction, leading to uncontrolled ejaculation. If the cause of uncontrolled ejaculation is unknown, it is necessary to consult a doctor in time to exclude the factors of disease.