For male premarital checkups, the following types of checkups can be selected according to individual circumstances: 1. physical examination by a specialist, through physical examination by a specialist, to find out if there are any developmental deformities or abnormal lesions in the penis scrotum and testicles, such as cryptorchidism, syringomyelia, varicocele, circumcision and other diseases that hinder fertility. 2. tests, routine blood, urine and stool examinations can be done. If necessary, further routine semen examination can be done to understand the quality of sperm or their ability to live. 5. If there is a family history of hereditary diseases, it is recommended to go to a provincial maternal and child health institution If there is a family history of hereditary diseases, it is recommended to go to qualified institutions such as provincial maternal and child health institutions, reproductive medicine health, etc., for genetic chromosome examination.