Abstract: Objective:To explore the characteristic of female Chinese style wrestling athletes' myocardial injury caused by pre-competition training and the intervention of tea polysaccharide on their myocardial injury.Methods:20elite female Chinese style wrestling athletes were randomly divided into placebo training group and tea polysaccharide training group.Firstly, two groups finished 4weeks heavy load training, then they finished 1week adjusting training, finally they finished one high-strength special physical training.During the whole training, placebo and tea polysaccharide were taken at a dose of 10mg/kg body weight respectively.The cTnT, CK-MB, MDA, SOD, CAT, GSH-Px, BV, PV, HRD, RCA, VR and TK were tested respectively at different time.Results:The changing tendency of two groups' cTnT and CK-Mb in blood was the same during 4 weeks heavy load training and after one high-strength special physical training.Tea polysaccharide training group's values of cTnT and CK-MB were lower than placebo training group's at the same stage and tea polysaccharide training group's indices of MDA, SOD, CAT, GSH-Px, BV, PV, HRD, RCA, VR and TK in blood improved significantly.Conclusions:Elite female Chinese style wrestling athletes' myocardium was gradually adapted to 4weeks heavy load training in the circulation of myocardium's injury and repair and their myocardium's resistance against sports injury was enhanced.Elite female Chinese style wrestling athletes' myocardial injury caused by one high-strength special physical training was a reversible minor damage;Their myocardial injury could be reduced by means of taking tea polysaccharide:tea polysaccharide could enhance their antioxidant capacity, reduce their myocardial oxidative stress injury, improve their hemorrheology and myocardial effective blood perfusion and enhance their myocardial cell's tolerance for ischemia and hypoxia.