Abstract: Based on FLAC^3D numerical simulation for Liangjia Coal Mine No.4 roadway under earthquake load, we revealed the support scheme of adopting anchor net spray combined support system in No.4 coal tunnel after excavation, and the stress field and displacement field under earthquake load caused by the evolvement of surrounding rock. Numerical simulation results show that the influence of seismic load on coal roadway surrounding rock stress field and displacement field is bigger, more than the impact on the surrounding rock displacement field, especially the impact on the floor. We propose the existing support scheme of injecting ordinary concrete to instead of injecting rubber particle concrete, and joining the inverted-arch on the floor. Results show that the effect of seismic load on roadway deformation gets effective control.