A normal adult male ejaculation after 2 minutes of penile entry into the vagina can be considered as a normal time. As far as the national situation is analyzed, the ejaculation time after the penis enters the vagina for more than 2 minutes after intercourse is normal, and if the time is shorter than 2 minutes, it is necessary to consider whether the patient has sexual dysfunction problems. If the time is less than one minute, or the act of ejaculation occurs just after the penis touches the vagina, it can be considered that there is a case of premature ejaculation. There are more causes of sexual dysfunction, such as overexertion, high mental tension, long-term masturbation and masturbation, lack of sexual knowledge, impotence and sexual frigidity. Patients need to go to the urology department as well as the reproductive department for examination, and according to the patient’s lesion and auxiliary examination, analyze the condition and actively treat it. If patients have bad habits, they should quit early, and pay attention to dietary adjustments, and eat more zinc-containing foods appropriately, which can improve sexual function.