Cat toilet is a necessity for cat families. In recent years, intelligent cat toilet has been welcomed by cat owners by virtue of its advantages of easily solving the problem of shoveling excrement. Smart cat toilet product design has a variety of cleaning options, industrial designers through online and offline market research and analysis, found that fully enclosed clean no smell is the standard for consumers to buy products, and ball rolling clean is the ideal way. The appearance design of the smart cat toilet adopts Japanese style home, the overall shape is small but the space utilization efficiency is relatively high. Removable and washable curtain can effectively block odor, even if it is not cleaned in time, it will not pollute the indoor space. The hole design at the door largely solves the problem of cats carrying sand when entering and leaving. The appearance design of the combination of square and round is integrated with the roller structure, making full use of the internal space. The external sand leakage basin adopts the same product design language as the main machine, and is placed outside the entrance to facilitate quick extraction and cleaning, saving time and effort.