The pain after urinary stone surgery may be a normal manifestation, but also may be caused by surgical damage, infection and other factors. 1. Normal performance: when there are urinary stones, before the operation, the stones may cause local damage, after the operation, due to the damage site has not fully recovered, so there may still be pain after the operation, but the symptoms of pain will be significantly reduced. 2. Surgical injury: improper operation during surgery, resulting in local damage, can also lead to pain after surgery, may also be accompanied by mild bleeding. 3. Infection: Improper post-surgical care leads to infection in the urinary tract system, which is stimulated by inflammatory substances, resulting in local congestion and edema, which can cause pain and may be accompanied by frequent urination, urinary urgency and other symptoms. 4. Ureteral stent influence: after the operation will usually leave the ureteral stent tube, exercise stent tube friction may also cause pain and discomfort in the lower back or bladder area. If you still have pain after urinary stone surgery, and the pain lasts for a long time or is accompanied by other abnormal symptoms, it is recommended that you consult a doctor for examination and treatment.