Whenever we talk about diseases such as cancer and AIDS, people are scared by them because, the whole society is concerned about these diseases. But in life, there are other diseases that seem to be a minor illness, because the disease is easily confused in diagnosis in its early stages, the incidence is not high and uncommon, the patient does not care much, the family does not pay much attention to it, and the doctor is prone to misdiagnosis. As a result, treatment is delayed, the condition worsens, and finally goes to an irreversible and distressing point. However, these minor diseases are not difficult to treat if they can be diagnosed early. For example, a common testicular disorder in adolescents: testicular torsion. The testicles are located in the scrotum and are connected to the body by a tissue called the spermatic cord, through which the blood vessels that supply the testicles with nutrients and carry away metabolic waste pass. Testicular torsion refers to the twisting and twisting of the spermatic cord on the testicle. Once the spermatic cord is twisted and twisted, it is like a person being strangled, and generally irreversible damage can occur after 4 to 12 hours, while ischemic necrosis will occur in the testicle after more than 12 hours. Testicular torsion tends to occur in adolescents or infants. The typical symptoms are sudden swelling and tenderness of one side of the scrotum after strenuous exercise or during sleep, thickening of spermatozoa, and pain that may involve the lower abdomen, groin or thigh. Some patients may also suffer from nausea, vomiting, fever, and difficulty walking. It occurs after strenuous exercise because the testicle is twisted by violent jolts relative to the spermatic cord. It occurs during sleep because of frequent position changes during sleep and because the adolescent levator muscle is prone to spasm and the testicle is rotated and displaced relative to the scrotum. Clinically, testicular torsion is easily confused with orchitis, epididymitis, hernia, testicular syringomyelia, acute scrotal trauma and other diseases, which are often misdiagnosed and miss the best time for treatment. Scrotal color ultrasound can determine the presence or absence of blood flow in the testis, which is the most effective and simple clinical diagnosis method. The early diagnosis and the manual or surgical repositioning is the key to the treatment of testicular torsion. 83% of the testicles are saved by surgical treatment within 5 hours, 70% within 10 hours, and 20% after 10 hours. The longer the delay, the more severe the destruction of the testicle and the greater the likelihood of loss of function. If the disease is not recognized enough or if treatment is delayed, it can lead to testicular necrosis and removal. Even if the testicle is not removed, the testicle’s ability to produce sperm and secrete androgens is often damaged due to prolonged ischemia, and testicular atrophy can occur later. Here I would like to remind parents to pay close attention to their children who are in their adolescence, if the child complains of scrotal swelling and pain, parents must pay great attention to it and ask a professional doctor for treatment; secondary school students and even college students who live in school for a long time often delay treatment because of shyness or lack of attention, remember not to avoid treatment.