Summary of case history,　Patient DONG, male, more than 8 months old. On September 23, 2021, he was hospitalized for "thrombocytopenia was found for more than 6 months". Fever occurred in March 2021, and platelets 36×10,9,/L, considered initially as thrombocytopenia caused by viral cold. After treatment, the platelets returned to normal for a time and then dropped to 42×10,9,/L, combined with bone marrow puncture report, the patient was definitely diagnosed as primary thrombocytopenia, and was given hormone therapy combined with gamma globulin. The platelet fluctuated between 4 and 264×10,9,/L, intravenous injection of gamma globulin is required every two to three weeks. Parents can not bear the hardship and turn to TCM treatment.,Four diagnostic information,　clear consciousness, no bleeding point in the whole body, light red tongue, thin moss and fine pulse,TCM diagnosis,　purpura (deficiency of spleen and kidney). According to the physiological characteristics of children's "frequent deficiency of spleen", Professor YAO Naizhong, a famous Chinese Medicine professor in Shanghai, put forward the method of strengthening spleen and nourishing stomach to treat infantile ITP on the basis of warming the kidney and filling the marrow. The effect is remarkable.,Western medicine diagnosis,　primary thrombocytopenia,Efficacy evaluation,　complete response (CR),Outcome,　cure