Itchy urethra does not usually occur with kidney stones. If itchy urethra occurs, it is often caused by an infection in the urethra itself, not by kidney stones. Patients are advised to go to the hospital for routine urine tests or urine culture tests, and to check whether there is purulent discharge from the urethra, especially after unclean sexual contact. If the urethra is itchy, it should be considered that there may be related sexually transmitted diseases, and an ultrasound examination of the urinary system should be performed to clarify the location and size of the stones and to choose the appropriate treatment, such as extracorporeal shock wave lithotripsy or surgery. . The disease can be cured by stabilizing the infection through anti-infection treatment and completely removing the stones from the body through extracorporeal shock wave lithotripsy or surgery. If a sexually transmitted disease is diagnosed, such as periurethral itch or urethral itch due to mycoplasma or chlamydia, it is recommended to refrain from sexual activity during treatment because mycoplasma or chlamydia can be transmitted through sexual contact.