OBJECTIVETo study the effect of Huodan Tablet in treating pediatric viral myocarditis.METHODSClinical manifestations and physical signs as well as laboratory examinations have been observed.RESULTSThe markedly effective rate was 68%, the total effective rate was 91.67% in therapeutic group, while in control group, the markedly effective rate was 30.83% and the total effective rate 70.84%. According to Ridit analysis, significant difference was shown between the two groups. r-therapeutic group = 0.5000, r-control group = 0.295 + 2 x 0.025, respectively.CONCLUSIONHuodan Tablet has no toxic and side-effect and can be taken safely and conveniently, it complies with the demands of WHO on new drug for prevention and cure of myocarditis.