The following examinations can be chosen according to the specific situation of the man: 1. routine examination items include blood routine, urine routine, liver and kidney function, blood lipids, blood sugar, screening for infectious diseases, chest X-ray, electrocardiogram, etc. 2. routine semen examination and examination of sex hormone levels can be done if necessary. 3. physical examination by a specialist, through the physical examination by a specialist, the development of the reproductive period can be understood. The development of testes and epididymis, the presence of diseases that hinder fertility, such as hypospadias, prepuce, testicular sphincter effusion, testicular tumor, cryptorchidism, testicular dysplasia, etc. 4.Ultrasound examination of the genitourinary system is an effective supplement to the physical examination of the specialist.