The invention provides a rapid stirring mechanism of a pharmacy stirring machine, and belongs to the field of pharmacy machines. By means of the rapid stirring mechanism, the problem that an existing stirring mechanism is low in stirring efficiency is solved. The rapid stirring mechanism of the pharmacy stirring machine comprises a barrel, a sleeve and stirring paddles, wherein a motor and an air cylinder are fixed to the top and the bottom of the barrel respectively, and a stirring shaft is connected to a motor shaft; the stirring shaft is sleeved with the sleeve, through holes are formed in the sleeve, and hinging parts are arranged on the stirring shaft; the stirring paddles penetrate through the through holes and are hinged to the hinging parts, a compression spring is arranged between the top face of the bottom end of the sleeve and the end of the stirring shaft, the stirring shaft and the sleeve are provided with sliding grooves and sliding blocks respectively, the sliding blocks are embedded into the sliding grooves, the compression spring pushes the sleeve, and the sliding blocks are located at the bottom ends of the sliding grooves accordingly; at the moment, the through holes abut against the stirring paddles, the stirring paddles are turned downwards, a pushing rod abuts against the bottom face of the bottom end of the sleeve, the stirring paddles are driven to rotate in the mode that the stirring shaft is matched with the sleeve, the pushing rod is stretched to push the sleeve, and the through holes push the stirring paddles to move up and down. The stirring mechanism is higher in stirring efficiency.