Medicament preparation device

The utility model relates to the technical field of medicament preparation, in particular to a medicament preparation device, which comprises a plurality of suction pipes and a plurality of liquid storage pipes, the plurality of suction pipes are fixedly connected with the plurality of liquid storage pipes respectively, pistons are connected in the plurality of suction pipes in a sliding manner, and screws are rotatably connected onto the plurality of pistons. The multiple screws are in threaded connection with the multiple suction pipes correspondingly, and auxiliary assemblies are arranged in the multiple suction pipes correspondingly. According to the utility model, a plurality of different containers are respectively placed in the liquid storage tubes, then the screws are rotated according to the proportion, liquid medicine in the liquid storage tubes enters the suction tubes and enters the suction tubes through the two holes in the sliding plate, then the screws are rotated reversely, the pistons move re