The percentage of normal morphology spermatozoa is greater than 4%, which means that the morphology of spermatozoa is normal. Sperm morphology is an important indicator of male fertility. The percentage of normal sperm morphology is greater than 4%. If the percentage of normal sperm morphology is less than 4%, it is abnormal and the sperm has a high rate of malformation, in which case it is difficult for the sperm to combine with the egg to complete the pregnancy. In addition to the sperm percentage, you can also determine whether the sperm is normal or not based on the semen volume and sperm concentration and vigor, which will help determine the probability of pregnancy. If you want to do this test, male patients are advised to go to the hospital for a detailed examination. If abnormalities are found in the ratio of sperm, active treatment is needed.