Patients with back pain when urinating should decide in combination with whether they are accompanied by other symptoms, which may be urinary stones, kidney tumors, prostatitis, pyelonephritis and so on, as follows: I. Urinary stones: If it is back pain when urinating, especially if it is accompanied by hematuria, it may be caused by urinary stones. For kidney stones, the back pain may be mostly distension. For ureteral stones, the back pain is usually more intense, often accompanied by nausea, vomiting and other gastrointestinal symptoms. Second, kidney tumors: attention should be paid to the presence of kidney tumors. Prostatitis: For young and middle-aged men, especially during the sexually active period, when there is more sexual stimulation such as masturbation and sexual intercourse, it may be caused by prostatitis. Four, pyelonephritis: for female patients, if accompanied by varying degrees of urinary frequency, urinary urgency, urinary pain, you should consider the possibility of acute and chronic pyelonephritis caused by. If the patient has back pain when urinating, he should go to the urology department of a regular hospital for examination, such as routine urination, urological ultrasound, etc., to make a clear diagnosis.