To achieve the same ignition signal control multi-channel high-low pressure micro-ejection system, based on a variety of micro-projectile systems,the paper uses storage, transportation, project integrative design, makes multi-sets of the same transmitter symmetrically distributed, and uses the rational gas path to make the warheads symmetrically pressed, without increasing the resident measures and it will reduce the muzzle velocity of the spread and the launch mass. From the theoretical and experimental point, the paper verifies feasibility and stability of the system.