he ANSYS/LS-DYNA3D finite element analysis software and the Arbitrary Lagrangian-Eulerian (ALE) algorithms were used to simulate the formation processes of shaped charge jet under different ways of initiation,such as one point ignition, the liner top two ring line ignition,axial charge outer wall center one ring line ignition and three ring line ignition. Calculated results show that ways of initiation have great influence on jet performance. Different ways of initiation produce different shapes of detonation wave. The jet tip velocity produced by the ignition ways of the liner top two ring line is increased by 11.6% than that by the one point ignition, the jet tip velocity through the liner the axial charge outer wall ignition is lower than that by any other ways of the top of the liner, and the jet tip velocity produced by the liner the axial charge outer wall three ring line is decreased by 18% than that by the ignition ways of the liner top two ring line. The confirmation experiment was carried out. The simulation results are in accordance with the experimental data.