Men with hematuria and back pain may be caused by kidney stones, acute pyelonephritis, kidney tuberculosis and other causes that need to be examined in time to clarify the cause. 1. Kidney stones: men with more calcium salts in the body or often do not drink water can easily cause kidney stones, when the kidney stone activity, it can lead to hematuria, lumbago and other symptoms, the pain is often more severe. 2. Pyelonephritis: Acute pyelonephritis is often manifested as frequent urination, urinary urgency, urinary pain and other symptoms, the patient may also have back pain, serious patients may have hematuria, pus urine and other symptoms. 3. Renal tuberculosis: this disease is mainly caused by tuberculosis bacillus infection of the kidneys, patients with common symptoms of urinary pain, urinary urgency, urinary frequency, etc., in addition, this disease can also be accompanied by low-grade fever, lumbago, hematuria and other symptoms. Men with hematuria with lumbago are advised to seek medical attention in time to identify the specific cause and targeted treatment to avoid delaying the condition.