Abstract: The present invention relates to a pet potty capable of disposing of excrement of a pet. More particularly, the present invention relates to a pet potty that is automatically turned on when a built-in sensor detects a pet approaching the potty within a predetermined distance to evacuate excrement. When the pet finishes evacuating excrement and leaves the potty, the excrement is automatically disposed of by rotating the floor members. The potty is designed to be operated only when the pet stayed on the potty over a predetermined period of time. Thus the potty effectively prevent the troubles and uncleanness caused by the excrement of pets.