Navigation body water outlet launch canister device capable of adapting to repeated experiment position deviation

The invention belongs to the field of navigation body water outlet experiments, and particularly relates to a navigation body water outlet launch canister device capable of adapting to repeated experiment position deviation. The device comprises a launch canister device and a launch canister support, wherein the launch canister device is mounted in the launch canister support; the launch canister device comprises a launch canister, an adjusting block, an adjusting block fixing plate, a bolt with a polished rod, a spring, a bottom cover, a thin air inlet pipe, a thick air inlet pipe, a drainage quick plug and an air pressure sensor, the inner side face of the adjusting block and the outer wall of the launch canister are fixed and completely restrained, and the outer wall of the adjusting block is fixed to the adjusting block fixing plate through the bolt with the polished rod sleeved with the spring. The launching cylinder can horizontally move with two degrees of freedom in a small range along with the four a