Generally speaking, semen examination is often used to understand the quality of sperm by observing sperm vitality, sperm concentration, sperm morphology, etc. All three items are indicators for evaluating the quality of sperm, and there is no such thing as which indicator is important, and any problem with any of the items can lead to male infertility and so on. The semen examination report form contains semen volume, PH value, liquefaction time, sperm viability, sperm deformity rate, etc.. In general, normal sperm should meet the following standards: sperm a (fast forward motion) >25% or the percentage of a+b class sperm (slow forward motion) >50%, sperm count >15 million sperm/ml, and normal morphology of sperm should be ≥4%, and any problem in any of these items can lead to male infertility and so on. Sperm quality mainly depends on sperm viability, sperm concentration and sperm morphology. Sexual intercourse should be abstained for 3-7 days before semen examination to ensure the accuracy of semen routine. The results of the test should be analyzed by a specialist, and the doctor will give appropriate treatment according to the results.