The present invention relates to an animal toilet usage status management system, which is an animal toilet usage status management system including an animal toilet and a management server, wherein the animal toilet has a hole penetrating in the vertical direction at the bottom. The formed upper container, a lower container that receives urine passing through the hole, and a weight measuring unit that measures the weight of the upper container, the management server including a calculating part configured to calculate animal body weight and excretion information based on the measured weight transition change of the upper container.