The features of 2/2 cartridge valve and the tightwire impact test bench were introduced.The principle of the hydraulic circuit of the 2/2 cartridge valve in the test bench was emphatically analyzed. The simulation modeling and parameter setting were introduced. The simulation results show that 2/2 cartridge valve technology can be applied to tightwire impact test bench,and provides reference for the design and manufacture of other impact test benches.