Semi-automatic injection device for poultry and injection method

The invention discloses a semi-automatic injection device for poultry, which comprises a moving vehicle, and a lifting mechanism and an injection assembly which are mounted on the moving vehicle, and the moving vehicle can move in front-back and left-right directions, so that the semi-automatic injection device can move in the axial direction and the radial direction of a poultry breeding production line; the movable vehicle comprises a bottom frame, a vehicle top plate, front wheels, rear wheels, a driving assembly and a steering assembly, the front wheels, the rear wheels, the driving assembly and the steering assembly are all installed on the bottom frame, and the front wheels and the rear wheels are rotatably installed at the front position and the rear position of the bottom frame respectively. The front wheels and the rear wheels can rotate relative to the bottom frame, the driving assembly is in transmission connection with the rear wheels, and the steering assembly is in transmission connection with t