Objective:To study the drug law for Chinese medicine treatment of children with idiopathic thrombocytopenic purpura(ITP).Methods:We searched CNKI database,constructed the Chinese medicine treatment database for children with ITP,analyzed high frequency prescriptions as well as high-frequency drug of tastes,meridians,and explored the drug law and characteristics.Results:In all prescriptions,there were 153 kinds Chinese herbs,748 frequencies.The high-frequency drugs were tonic class and heat-clearing and bloo...