The invention discloses a moving device for an insertion plate of a material bin. The moving device comprises the insertion plate, a guide plate, a lead screw, a threaded sleeve, a lead screw fixing device and a driving device. The guide plate is fixed to a discharging port of the material bin, a guide groove is formed in the guide plate, the top end of the insertion plate is movably arranged in the guide groove, the threaded sleeve is fixed to the tail end of the insertion plate, the lead screw is sleeved with the threaded sleeve, one end of the lead screw is arranged on the lead screw fixing device in a rotatable mode, and the other end of the lead screw is fixedly connected with a driving shaft of the driving device. In the use process, the driving device is started and drives the lead screw to rotate, and the lead screw rotates to drive the threaded sleeve to move forwards or backwards, so that the insertion plate is driven to move forwards or backwards in the guide groove, and the discharging port of the material bin is opened and closed. By the adoption of lead screw driving, thrust is very stable and continuously exerted, so that the insertion plate does not deform, meanwhile, the amount of labor is reduced, and working efficiency is improved.