Research conclusions:(1)The direct lightning stroke will be led into the substation when the lightning strikes the overhead return line if it’S lnstalled t00 high arid the arrester Wlll be destroyed if the Overhead feeder hne lsn’t installed incoming protection line. (2)Some proposals can improve the substation’s lightning protection lever, such as installing the incoming lightning protection line of the feeder, strengthening the grounding line，researching the bus一bar protection relay，and so on.(3)The research results are mainly used for optimization program and design fields on the traction substation lightning protection.