The length of the supply pipeline for the large hydraulic support is about 1 000~1 500 m. The pipeline diameteris about 38~60 mm, and the working pressure inside the pipe is 23~325 MPa. Due to the obvious hysteresis effect of pressure and flow response, the dynamic characteristics of speed and displacement of cylinder hydraulic system are poor. The hydraulic hammer test for high pressure liquid supply pipeline of hydraulic support was carried out. The experimental results show that the pressure wave velocity is 715, 979 and 1 065 m/s when the flow rate is 1827, 3512 and 5215 L/min respectively. The AMESim pipeline model and the hydraulic support system model were established. The influence of pipeline length, pipeline diameter and initial pressure on the dynamic characteristics of hydraulic support column was analyzed. The simulation results show that when the larger the pipeline length, the larger the pipeline diameterand the smaller the initial pressure of the pipeline, the longer the response time of the column, the more stability and the more time of lifting and descending the column.