Neutral beam injection has been recognized as one of the most effective means for plasma heating.In order to achieve high-performance steady-state plasma,the high power current drive and auxiliary heating system are necessary for EAST,so two sets of neutral beam injector began to be built in 2010 and put into use in 2015[1-3].As one of the key parameters,neutralization efficiency determines the power injected into tokomak and the power deposited on the heat loading components.This paper shows the power distribution deposited on the heat loading components of beamline at different neutralization efficiency.