This season is a high incidence of ureteral stones and renal colic, with a particularly high number of patients coming to outpatient clinics, emergency departments, and wards for ureteral stones, but what is mentioned here is not ureteral stones, but a relatively rare urological emergency – testicular torsion. Some patients with testicular torsion present with scrotal involvement of the lumbar abdomen and groin area with pain, similar to that seen in some ureteral stone attacks. The disease is more prevalent in adolescents. Due to the obscure onset of the disease, some patients with mild symptoms may often delay the disease and cause testicular necrosis in severe cases, and some patients are misdiagnosed as acute testicular epididymitis. The disease mostly develops during sleep, and one side of the testicle and scrotum will be in severe pain. The pain is initially confined to the scrotum, but later develops in the lower abdomen and perineum, accompanied by vomiting, nausea or fever, and redness, swelling and pressure pain in the pubic area. Color Doppler ultrasonography: Impaired blood circulation in the testis due to torsion of the spermatic cord itself is manifested by enlargement of the affected testis with hypoechogenicity, and color Doppler flowmetry shows that the blood flow signal within it is significantly reduced or disappeared. If testicular torsion occurs, the best treatment is to perform surgery. Surgical methods include both surgical and manual repositioning. In daily life, many patients are paralyzed by testicular torsion and tolerate the pain again and again, thus delaying early treatment and causing others to lose their fertility. Therefore, if patients around puberty suddenly develop scrotal swelling and pain, especially teenagers, they should consider the possibility of testicular torsion and go to the urology department of the hospital for examination and treatment in time. In the early stage of testicular torsion, good results can be obtained with freehand reset. However, once the onset is longer, only surgical treatment is possible. In addition, for adult patients, if testicular torsion occurs, it is important to ask the doctor to do a routine semen examination after treatment to understand the function of the affected testicle and the opposite testicle and to understand the fertility function.