Summary of case history,　The child patient Zhang, female, 5 years old, was first diagnosed on March 26, 2019. The chief complaint was "purpura on both lower extremities over a month and a half ".On February 5, 2019, the child patient broken out in a symmetrical dark red rash on both lower extremities without obvious inducement, and was diagnosed as "Henoch-Schonlein purpura" in a local hospital. After treatment (the details are unknown), the rash dissipated, during this period, her routine urine examination was normal.From February 11, 2019 to February 20, 2019, the child repeated routine urine examination: protein +~3+, occult blood ±~3+. On February 20, 2019, the child patient broken out in a rash on both feet again without obvious inducement, with the same nature as before, and was diagnosed as "Henoch-Schonlein purpura and purpura nephritis" in Xi 'an Children's Hospital. The doctor suggested perform kidney puncture to confirm the pathological type, but declined by the child patient's family..On February 25, the child patient was given oral prednisone tablets (15 mg/time,3 times/day) to suppress the immune response, and rutin tablets (20 mg/time, 2 times/day), dipyridamole tablets (25 mg/time,3 times/day), captopril tablets (8.33 mg/time, 1 time/day), Caltrate With Vitamin D Tablets (1 tablet/time, 1 time/day) were given as adjuvant therapy.During the period, the child patient took medicine regularly, and the symptoms improved slightly. On March 23, the child patient broken out in a rash on the right lower extremity and double dorsalis pedis without inducement. Routine urine examination showed protein 2+, occult blood ±, urinary red blood cell quantification 84.7 /ul. Liver and renal function test: total protein(TP) 51.9g/L, albumin(ALB) 29.2 g/L, serum creatinine 28 umol/L, β2-microglobulin 0.93 mg/L; Urinary creatinine was 154 umol/L, urine microalbumin 819.8mg/L, and urine microalbumin/urine creatinine was 532.34 mg/mmol. On March 24, 24-hour urinary protein quantity 1473 mg .On March 26, the patient came to the Famous Doctor Pavilion of the Hospital of Shaanxi University of Traditional Chinese Medicine to seek TCM treatment. Symptoms: conscious mind, there are several needle-like dark red rash on both lower extremities, flat with the skin , pressure on the rash and it doesn't fade. the child patient own words: skin itch of both hands, easy to sweat at night, dry mouth to drink in the morning, abdominal pain, accompanied by general fatigue. Usually afraid of heat, poor food intake, normal sleeping, normal urine volume, yellow urine, a large foam in the urine, shapeless stool once or twice a day. The tongue is red, the moss is thin and white, and the pulse is moisten. At first diagnosis, the child patient, had been taking prednisone regularly for 4 weeks (15mg/ time,3 times/day), and did not start to reduce the dose, the child patient continued to take dipyridamole tablets and Caltrate With Vitamin D Tablets.,TCM diagnosis,　Suggillation (Deficiency of spleen and kidney,qi and yin deficiency,damp heat and blood stasis obstruction),Western medicine diagnosis,　Henoch-Schonlein Purpura Nephritis,Therapeutic methods,　TCM treatment: nourishing spleen and kidney, nourishing qi and Yin, invigorate dampness and promote blood circulation. Qidi Gushen recipe combined with anti-sensitization dehumidification decoction.Western medicine treatment: The child patient adequate used of prednisone tablets ( 15mg/ time, 3 times/day) since February 25, 2019, lasted for 8 weeks. On April 24, 2019, began to reduce the dose of prednisone tablets , and reduced successively on May 14, May 28, June 5, June 11, and June 15, on June 17 it was reduced to a halt. Giving rutin tablets (20mg/ time, twice/day), dipyridamole tablets (25mg/ time, 3 times/day), captopril tablets (8.33mg/ time, once/day), Caltrate With Vitamin D Tablets (1 tablet/time, once/day)to treat the symptoms.,Clinical outcomes,　The patient was treated with oral TCM decoction in our department, and a week later, the rash on both lower extremities disappeared. .Reviewing routine urine examination showed that the indicators of protein, occult blood and urinary red blood cell quantification were all improved, and the 24-hour urinary protein quantification decreased.Above results were suggesting this treatment was effective. On the basis of the main prescription unchanged, the decoction was adjusted according to the disease, and the decoction was kept taking for more than 10 months.The child patient's condition was stable, and urinary red blood cell quantification was basically controlled between 0-100 /ul, and the 24-hour urine protein quantification was basically controlled between 50-200 mg. In the mean time, the child patient changed her unhealthy diet such as picky eating and partiality for a particular kind of food, and avoided aggravating renal damage such as fatigue and infection. The symptoms such as skin purpura, gastrointestinal symptoms and urinary protein were relieved obviously.It shows that the curative effect is significant in this treatment.