So in view of this situation, we will introduce testicular torsion in detail for everyone. First, the cause of testicular torsion: 1. Intrathecal torsion, too long anatomical factors or absence of testicular mesangium, cryptorchidism or testicular ectopia. Testis and spermatic cord are completely surrounded by tunica vaginalis. Testicles are not attached to the scrotal wall normally, but are suspended from the spermatic cord and can move freely, so testicular torsion is mostly spontaneous. Cryptorchidism occurs, and in a few cases, abdominal cryptorchidism can cause acute abdominal pain, which is generally difficult to distinguish. 2. Older children generally have the following incentives before onset: ① strenuous exercise: such as cycling, dancing and ball games. , leading to testicular levator spasm and contraction, leading to testicular torsion; ② Changes of ambient temperature: The incidence rate is high in cold season, which may be related to the excessive contraction of scrotum. During sleep, the incidence may be due to the change of testicular position forced by sleeping posture or the increase of vagus nerve excitability at night, which makes the levator testis spasm and contract. In recent years, it has been reported abroad that the corresponding treatment should be given at the same time of abdominal endoscopic diagnosis. Second, the clinical manifestations of testicular torsion: scrotum swelling on one side, testicular pain and testicular swelling on the affected side are the main signs of testicular torsion. Older children often have sudden scrotal pain, while infants often cry, and the pain can radiate to the lower abdomen or the inner thigh, accompanied by symptoms such as nausea and vomiting. Physical examination showed that one scrotum was swollen, the affected testis moved up, swollen, tender or horizontal, the spermatic cord became thicker, the cremaster reflex disappeared, the light transmission test was negative, and the peripheral white blood cells increased after twisting for more than 24 hours, but there were exceptions reported in the literature. The above introduction about testicular torsion, I believe that male friends must have some understanding, and I hope it will help male friends. Testicular torsion should be treated in a regular andrology hospital as soon as possible to avoid unnecessary complications.