Objective To investigate the changes of HBV markers in patients with HBeAg positive chronic hepatitis B(CHB) after a large number of blood transfusion treatment.Methods 26 patients with chronic HBV that were treated massive blood transfusion in 24h were collected from Jan 1,2015 to Jan 1,2016.The HBV serum markers and HBV-DNA were measured and compared before and after treatment.Results The HBsAg,anti-HBs and anti-HBc concentration in first day after treatment were different compared with before treatment(t=2.681,4.753 and 5.116,all P<0.01).The HBsAg,anti-HBs and anti-HBc concentration in third day after treatment exist differences compared with before treatment(t=1.681, 2.209 and 3.118,all P<0.05).The difference still exist in the seventh day after treatment compared with before treatment with only anti-HBc concentration(t=2.463,P<0.05).There was not difference of HBeAg and HBV-DNA before and after blood transfusion in patients(t=0~1.132,P>0.05).After transfusionthe concentration of HBsAg in the fifth day was the lowest concentration as 0.17±0.03 IU/ml,the seventh day rose to 387.50±31.89 IU/ml,reaching the highest value,and the concentration of HBsAb decreased gradually to minimum at the seventh day that was 1.51±5.98 mIU/mmol,and the concentrations of HBeAg,HBeAb and HBcAb had no obvious change.Conclusion The HBsAg,anti-HBs and anti-HBc could be changed in patients with HBeAg positive CHB after massive transfusion therapy in short term.HBeAg and HBV-DNA were not affected by transfusion therapy.