The invention discloses equipment for producing food-grade calcium carbonate from gypsum. The equipment structurally comprises a feed hopper, an electronic belt scale, a console, steps, a finished product holding box, a transition plate, a novel grinding device, a connecting pipe, a buffer pressure barrel and a stirring barrel. According to the equipment for producing food-grade calcium carbonatefrom gypsum, a fan can be driven by a motor braking device, the feeding speed of raw materials is increased, a stirring mechanism and a mixing mechanism are driven, so that the raw materials are mixedand stirred more sufficiently, and subsequent screening is facilitated; due to the principle of gravity, a transition device slightly presses down to enable the side surface to start grinding, the grinding speed is increased, a screening box is beaten by a screening mechanism, the problem that residues remain in the device can be well solved, waste of raw materials is reduced, a pushing mechanismis driven by a rotating mechanism to push discharging of the raw materials, the discharging speed is increased, and production speed and efficiency of the whole device are increased.