ANSYS was used to simulate and analyze the L-shaped aviation hydraulic pipeline, and the influence of different numbers of clamps and different positions of clamp restraints on the natural frequency of L-shaped pipes were studied. The maximum paradigm stress changes of the pipeline under the action of pulsating fluid after adding different numbers of clamps were analyzed. The results show that when the length of the pipeline is fixed, appropriately increasing the number of clamps and changing the restraint position of the clamps can significantly improve the frequency of the pipeline;with the increase of the number of clamps, the maximum paradigm stress of the pipeline under the action of pulsating fluid gradually decreases, but the influence amplitude of clamp constraints on the maximum stress of pipeline fluid pulsation decreases.