Summary of case history,　The patient was a postmenopausal woman with recurrent frequency and urgency of urination accompanied by pain and discomfort in the left lower abdomen for more than 2 years, which occurred 2-3 times a year. The symptoms were significantly aggravated after each fatigue, without obvious fever and pain at the urethral orifice. The patient had the highest white blood cell in urine routine examination (++), and the middle urine culture was negative. She had been empirically treated with intravenous or oral levofloxacin, cefaclor and other antibiotics. She stopped taking them when her symptoms improved slightly. Engrave: the patient was tired, frequent and urgent urination, frequent urination at night, mild pain in the left lower abdomen, lumbar acid, stomach generally, stool is still modulated, night urine 3 times, night sleep generally. Red tongue, thin yellow moss, pulse string.,TCM diagnosis,　stranguria due to overstrain (deficiency of kidney qi and downward flow of damp-heat),Western medicine diagnosis,　recurrent urinary tract infection,Therapeutic methods,　tonify qi of kidney and clear heat and dampness,Clinical outcomes,　Improved. In the follow-up process of nearly half a year, the patient's appetite, stool, lumbar acid and other symptoms were significantly better than before, urinary tract infection did not relapse.