The invention discloses a quantitative rice feeding device for a traditional Chinese rice-pudding coater. The device comprises a hopper, a turn plate, a plurality of measuring cylinders, valves, a driving mechanism and a guide hopper, wherein the hopper is fixedly mounted on a frame of the traditional Chinese rice-pudding coater; a discharging hole is formed in the bottom of the hopper; the turn plate is arranged blow the feeding hopper; the measuring cylinders penetrate through the turn plate and are uniformly distributed about the axis of the turn plate; each valve is movably mounted at the opening of the lower end of each measuring cylinder; the driving mechanism is used for driving the valve to be closed or opened; the guide hopper is used for guiding the rice in each measuring cylinder to fall off. The quantitative rice feeding device disclosed by the invention is simple in structure, convenient to use, used for feeding rice to measuring glasses through the hopper and controlling the rice amount in each measuring glass to be the same, and capable of improving the accuracy of rice measurement.