Ejaculated semen like water takes at least 2 months to recover gradually, but there are some individual differences depending on individual physical conditions. Ejaculated semen like water is clinically known as thin semen, which can be caused by a variety of etiologies, such as long-term excessive and frequent sexual intercourse, which can lead to a decrease in sperm density and non-coagulation in a jelly-like form, manifesting as thin semen. Chronic vesiculitis or obstruction of the seminal ducts can cause a decrease in the secretion of semen coagulase, but it will not manifest itself as semen that looks like water after ejaculation. In addition, incomplete closure of the bladder neck can cause urine to mix with semen and thin semen to appear. Patients can usually recover gradually in 2-3 months if they can identify the cause and intervene accordingly. In addition, patients should control the frequency of sexual life and reduce the number of masturbation; regular work and rest to ensure sufficient sleep; strengthen nutrition and physical exercise to enhance physical fitness.