Testicular examination methods: 1, to the hospital by a specialized urologist or male doctor, for a detailed physical examination, with the hand touch the size of the testicle, texture and testicular fluid around the testicle or enlargement of the situation. 2, for testicular ultrasound, ultrasound can be to understand the size of the testicle, the density of the testicle and testicular echogenicity, echogenicity is uniform, whether there is a space-occupying lesion, whether the infectious lesions, and so on. 3, testicular CT examination, can be further detailed understanding of the cause of the enlargement or shrinkage of the testicles. Testicular CT examination can further understand the cause of testicular enlargement or shrinkage in detail. Whether it is caused by occupying disease that leads to increase in size, or ischemic disease that leads to testicular atrophy.4. Nuclear examination of spermatic cord can understand whether it is because of the blood supply of spermatic cord that leads to shrinkage of testicular size.5. Surgical exploration, such as unexplained enlargement of one side of the testicle and shrinkage of the other side, and suspicion of a history of occupying disease, can be carried out surgical exploration, to understand whether there is an occupying disease in the testicle. If there is a history of occupying disease, surgical exploration can be performed to find out whether the testicle has occupying disease. If occupying disease is found, it can be corrected by surgical resection or operation.