Urine yellow abdominal pain may be caused by urinary system infection, or urinary system stones, tumors and other reasons. 1. urinary system infection: for example, cystitis, urethritis, prostatitis and other infectious diseases, the emergence of this disease, the patient will appear small abdominal pain, and even with a burning sensation, often accompanied by frequent urination, urinary urgency, urinary pain, due to the patient to drink less water, the color of the urine is more dark yellow. 2. urinary stones: for example, ureteral stones, may also lead to yellow urine and abdominal pain symptoms. 3. Tumors: such as bladder tumors, urethral tumors, prostate, etc., can also lead to yellow urine and abdominal pain. There may be other causes of yellow urine and abdominal pain, patients need to go to the hospital in time for examination and treatment as prescribed by the doctor.