Pain after extracorporeal lithotripsy may be caused by local damage, residual stones, infection and other factors. 1. Local damage: When extracorporeal shock wave lithotripsy is carried out, the local tissues are damaged, and pain will occur after lithotripsy, which may be accompanied by mild hematuria. 2. Residual stones: After extracorporeal lithotripsy, the effect is not ideal, and there are still large stones in the body, which may cause irritation to the ureteral wall when discharged downward, and the symptoms of pain will still exist. 3. Infection: Infection is induced by improper care after extracorporeal lithotripsy, and the aggravation of infection may cause irritation to the kidney and ureter, and the symptoms of pain will still exist, which may be accompanied by fatigue, fever, urinary frequency, hematuria and other symptoms. If the pain is still there after extracorporeal lithotripsy, and the pain is more intense, it is recommended to consult a doctor for examination and treatment to avoid causing other complications.