Usually, you should not have intercourse for 3-7 days before the sperm test. Semen consists of spermatozoa and seminal plasma and is usually obtained by masturbation, preferably in the morning. Before semen collection, you need to wash your hands and pubic area with warm water, especially the glans. Semen should be sent for examination immediately after it is removed, and attention should be paid to aseptic operation when taking it. The examination items of semen analysis mainly include liquefaction time, liquefaction status, color, odor, consistency, semen volume, PH value, sperm concentration, sperm motility, sperm activity rate, PR forward motility sperm rate, and total number of sperms. Under normal circumstances, sperm motility is greater than 40%, PR forward motility sperm rate is greater than 32%, and 30-60 minutes after the discharge of semen, the normal sperm survival rate is 80%-90%. In addition, before the sperm test, you should pay attention to rest, avoid staying up late, smoking and drinking, eating spicy and stimulating food, etc., in order to prevent affecting the test results.