The most common male disease is semen abnormality. Many men think that semen abnormality only has some effect on fertility, but this is not true, as semen abnormality can affect a range of male fertility. If there is an abnormality in the male sperm semen, the embryo will not develop normally after it is combined with the egg to form a fertilized egg, and it will easily cause a miscarriage. If a man has abnormal sperm and semen, it is easy to cause mutual infection of the genitourinary system in the male body, which can lead to inflammation of the testicles and epididymis. The abnormal sperm semen is a major cause of male infertility, which mainly includes, low sperm count and reduced sperm vitality, thus leading to male infertility. If the sperm is abnormal, even if you are pregnant, the fetus is not normal, which is not conducive to the normal growth and development of the fetus, so both husband and wife should do a pre-conception test before getting pregnant in order to determine whether the sperm is normal. The reason is that male sperm and semen abnormalities can lead to male infertility, which in turn can affect the harmony of the family and make the family unsuccessful, so the abnormal sperm and semen phenomenon should be treated promptly. The above is the harm caused by men suffering from semen abnormalities. If a man has semen abnormalities, he must wait until the disease is completely cured before planning a pregnancy, otherwise it will have a great impact on the health of the fetus.