Total sperm motility refers to the total percentage of viable sperm to the total number of sperm in a man within 1 hour after sperm discharge. Usually, a total sperm motility of ≥60% is called normal sperm motility. Clinically, according to the classification criteria of sperm motility, sperm motility can be divided into four grades: a, b, c and d. Grade a refers to spermatozoa with rapid forward movement in semen; grade b refers to spermatozoa with slow or sluggish forward movement in semen; grade c refers to spermatozoa with non-forward movement; and grade d refers to spermatozoa that are in situ and not viable. Sperm motility refers to the total percentage of A+B+C spermatozoa, and the normal standard is that within 60 minutes of the semen specimen, the spermatozoa of A grade in a normal fertile male are ≥25%, the spermatozoa of A+B grade are ≥50%, and the total spermatozoa motility rate is ≥60%. If the sperm motility is lower than 50%, it is called low sperm motility, which may be related to certain diseases, such as varicocele, prostatitis, etc. Therefore, if abnormalities are found in the examination, it is also necessary to consult a doctor in time for investigation and treatment.