There are many people checking semen routine in outpatient clinics, but many patients mostly focus only on sperm vitality, while the more important sperm count is ignored. In order for people to learn to read their own semen routine labs and understand about their fertility, the following is a brief introduction (based on the fourth edition of semen routine standards, in order of importance): 1. Semen density (the most important). Sperm density responds to the number of sperm produced by the testes and the sperm production function of the testes. The normal value is a density greater than 20×106/ml, if the density <20×106/ml for oligospermia, no sperm for azoospermia, both oligospermia and azoospermia need to check serum sex hormone levels, testicular epididymis ultrasound. If the density is <5×106/ml a chromosomal test should be performed and IVF may be required. (The one-time success rate of IVF is generally about 30%). 2, sperm viability. Normal grade a ≥ 25%, grade a+b ≥ 50%. Sperm motility ≥ 60% is the standard deduced from this (sperm motility equals a+b+c). If the sperm motility is less than 60% it is considered as weak spermatozoa. One point to note: if less than 200 sperm are detected, it will seriously affect the determination of sperm motility and the results will be inaccurate! 3. The number of white blood cells in the semen. If WBC>2/HP, consider leukocytosis. 4.Volume of semen. Normal volume ≥ 2 ml. if too little consider obstruction of the reproductive tract, or incomplete retention of the specimen. 5, the PH value of semen. The normal PH value is between 7.2 and 8.0. If the PH value is below 7.0, it often indicates problems with the seminal vesicles and prostate gland, but if it is too high, it often indicates inflammation. 6. The morphology of the sperm. Normal sperm morphology should be greater than 15%, but the latest version lowers the standard to 4%. Sperm morphological examination is of greater significance for assisted reproduction. 7. Semen liquefaction time. Normal semen is completely liquefied within 30 minutes, otherwise incomplete liquefaction is considered. However, due to the difference between in vitro liquefaction and in vivo liquefaction, there is currently disagreement about its importance. Through the above points, we can understand the results of semen routine, but we need to pay attention to the following issues: 1. The quality of human semen is fluctuating, and the duration of abstinence, mental stress, general condition of the body, and the completeness of the retained specimen can affect the results. It is best to choose the same hospital, the same examination equipment, the same examiner, and the same abstinence time, so that the comparability is strong. The recommended abstinence time is 48-72 hours, and the previous requirement of one week abstinence has long been abolished.