Based on the on-site monitoring data， the dynamic response of Gongqiaopu tunnel under the dynamic load and the influence of lining are studied by FLAC3D. Under the dynamic loading at the bottom， the lining tunnel can change the direction of movement of other measuring points except the arch bottom，compared to the tunnel without lining. To prevent the tunnel from being inverted and effectively reduce the anchorage wall displacement of the tunnel， the wall rock of the tunnel is more “loose” when its four points are subjected to the compressive stress and the pressure value is much less than that of the lining. There are neutral points in the axial force of the anchor rod in the arch shoulder of the tunnel with lining support， while the anchor rod is pulled when the lining is not supported， and the latter is more close to the anchorage wall. The lining can effectively share the surrounding rock load and reduce the load of the anchor rod， the axial force of the anchor rod is relatively fast and the amplitude is large when the lining is in， and the tunnel with no lining supporting is under the shock of stress wave. The axial force of the anchor rod is relatively slow and the amplitude is small，which illustrates that the lining can support the dynamic load by dynamically adjusting the anchor rod.