Hematuria with small blood clots may be due to physiological factors such as menstrual blood contamination, or it may be due to pathological factors such as urinary tract infections and stones. 1. menstrual contamination: women menstruation, itself may have blood clots, if menstrual blood contamination to the urine, there may be hematuria with small blood clots, after menstruation attention to review. 2. Urinary tract infection: cystitis, urethritis and other conditions may also appear hematuria with small blood clots, at this time should be perfect urine routine, urine culture and other tests, according to the results of the drug sensitivity of the choice of antibiotic treatment as prescribed by the doctor. 3. Stones: Stones stimulate the ureteral mucosa, mucosal damage, may also occur. Smaller stones can be treated conservatively; larger stones are recommended to be treated surgically. Hematuria accompanied by small blood clots should go to the hospital in time to improve the relevant examination, treatment under the guidance of specialists.