a defecation plate formed to have a designated size;

a defecation sheet discharged from one side to a remaining side of the defecation plate so as to be laid on an upper surface of the defecation plate;

a defecation sheet supply unit configured to continuously supply the defecation sheet toward the upper surface of the defecation plate;

a main body case coupled to the remaining side of the defecation plate and configured to form an inner space having a designated size;

a vinyl tube block installed in the inner space of the main body case, comprising an upper stack part configured such that an upper sheet of a vinyl tube is folded at every fixed length in zigzag and is vertically stacked, a lower stack part configured such that a lower sheet of the vinyl tube is folded at every fixed length in zigzag and is vertically stacked, and side stack parts configured such that side sheets of the vinyl tube are folded at every fixed length in zigzag and are vertically stacked so as to continuously supply the vinyl tube comprising the upper sheet, the lower sheet, and the side sheets and configured such that the defecation sheet discharged from defecation plate is inserted thereinto, and configured to form a hollow part among the upper stack part, the lower stack part and the side stack parts so that the vinyl tube withdrawn from the upper stack part, the lower stack part and the side stack parts is withdrawn rearwards through the hollow part;

a vinyl tube supply unit comprising a hollow passage formation part configured to support the upper stack part, the lower stack part and the side stack parts of the vinyl tube block, inserted into the hollow part from behind the vinyl tube block so that an inlet of the vinyl tube withdrawn from the vinyl tube block and discharged rearwards through the hollow part is opened toward the defecation plate by a designated height and thus the defecation sheet and pet excrement placed on an upper surface thereof are inserted into the vinyl tube, and configured to form a hollow passage in the hollow passage formation part so that the vinyl tube passes through the hollow passage; and

a winding roller installed behind the vinyl tube supply unit to be rotatable in a horizontal direction, and configured such that a front end of the vinyl tube supplied rearwards through the hollow passage of the vinyl tube supply unit and a front end of the defecation sheet inserted into the vinyl tube are fixed to an outer circumferential surface of the winding roller so as to wind the vinyl tube, and the defecation sheet and the pet excrement inserted thereinto on the outer circumferential surface of the winding roller.