Men who ejaculate quickly during sex are generally common in the following situations: 1. Men who have not had sex for a long time or are having sex for the first time are prone to ejaculate too quickly due to excessive excitement or tension, etc. 2. Patients who have masturbated for a long time are prone to ejaculate quickly due to the greater stimulation of the penis from masturbation. This can cause men to have habitual fast ejaculation, so it can also cause men to ejaculate too quickly. 3, premature ejaculation exists. The common cause of premature ejaculation is excessive penile nerve sensitivity, which causes men to ejaculate quickly during sex and have a short ejaculation latency. Patients with premature ejaculation can improve their symptoms and prolong their sex life through medication. The main drugs commonly used are dapoxetine hydrochloride, sertraline, etc.