Sex life for the first time less than a minute, the second time on the good may be nerve excitement, sexual knowledge is insufficient and other physiological factors, or to consider is due to prostatitis and other diseases. 1. Physiological factors: if the nerve excitement, lack of sexual knowledge, excessive masturbation, long-term ejaculation, may lead to ejaculation abnormalities, sexual life for the first time less than a minute, the second time on the situation. This kind of situation is a normal phenomenon, no need to worry too much. 2. Prostatitis: Prostatitis may be caused by bacterial infection, immune abnormalities, frequent sexual intercourse, and poor hygiene habits. The patient can appear urinary urgency, sexual desire, premature ejaculation, nervousness and other symptoms, manifested in sexual life for the first time less than a minute, the second time is fine. There are many reasons why patients have sex for less than a minute the first time and then the second time, so it is recommended that patients go to a regular hospital in time to find out the cause of the disease and then treat it.