Male sperm quality examination is a routine examination reflecting male reproductive function, which includes semen volume, pH value, sperm vitality and so on. 1. Semen volume: under normal circumstances, a normal person’s semen discharge is 2~5 ml. If the semen volume is still less than 2 ml or more than 8 ml after abstaining from sex for 5~7 days, it is an abnormal phenomenon, and it is considered to be due to prostate or seminal vesicle lesions. 2. pH value: under normal circumstances, the pH value of semen is 7.2~8.0, if it is out of the normal range, it will affect conception, mostly due to diet, prostatitis, orchitis and other factors. 3. Sperm vitality: under normal circumstances, the movement of sperm should account for more than 40% of the total number of sperm, if the movement of sperm is less than 25%, it can be called weak spermatozoa, if the sperm is completely inactive, it is called necrospermia. It is recommended that men go to regular hospitals for sperm quality examination before pregnancy preparation, and receive treatment as early as possible if abnormalities are found.