Possible causes of bloated urine: 1. Suffering from urinary system infections such as cystitis, pyelonephritis, etc., can appear as small abdominal cramps, accompanied by increased frequency of urination and increased urine volume. The patient has obvious symptoms of urinary frequency, urinary urgency, and painful urination, and needs to undergo routine urine examination and urinary ultrasound to further exclude. 2. If there are stones in the urinary tract, there can be small abdominal cramps or lumbago, accompanied by increased frequency of urination, and needs to undergo urinary ultrasound and routine urine examination to confirm the diagnosis of the presence of stones in the urinary tract. 3. It may be caused by prostate enlargement. When prostate enlargement occurs, the patient’s bladder is obstructed from emptying resulting in more residual urine, there is a small abdominal swelling and an increase in the frequency of urination, especially at night. The actual fact is that you will need to have an ultrasound examination of the prostate gland to determine the residual urine in the bladder and, if necessary, a urethroscopy to visualize the volume and size of the prostate.