Abstract: The pulsation of the beam by using the beam chopper is an important means to meet the requirements of the accelerated structure and the multi-experimental terminal for the beam pulse time structure. In this paper, we mainly describe a multi-mode chopper that can achieve a beam pulse with rise/fall time less than 20 ns, and a pulse structure of 400 μs/50 Hz and 100 ns/1 MHz. Periodic high voltage is applied to the upper and lower plates to control the passage and removal of the beam. In order to reduce the rise/fall time of the pulse beam and the high voltage of the chopper plates, the gap between the sloped plates is optimized according to the beam dynamic envelope, and the load capacitance of the chopper is 6 pF, and 100% of the beam removal can be achieved when the high voltage between the plates is 6 kV. The relationship between the beam current and the high-voltage rise/fall time of the plate was calculated by dynamic beam tracing, and finally the development of the bipolar chopper and its high-voltage power supply was completed. The beam pulse experiment was completed on the LEBT line experimental platform, and the experimental results were in good agreement with the design.