Dispensing quantitative weighing device

The utility model relates to the related technical field of medicine dispensing, in particular to a medicine dispensing quantitative weighing device which comprises a weighing device, an installation mechanism is arranged on the surface of one side of the weighing device, a protection mechanism is arranged above the installation mechanism, and through the arrangement of a gravity sensor, a connecting block, a clamping groove, a spring, a clamping block, an installation block and a weighing plate, when the weighing plate is installed, the weighing device is fixed to the weighing device. The mounting block is aligned with the connecting block and is put in, the mounting block enters the connecting block, the clamping block is pushed towards the interior of the clamping groove by the large part at the front end, so that the clamping block extrudes the spring to enter the clamping groove, and when the large part at the front end of the mounting block completely enters the connecting block and the mounting block l