The present invention relates to a device for separating a defecated bag from a defecation device and replacing it with a new defecation bag to allow defecation of the pet dog when the pet dog is active in the house or walking outside the house, and in the lower center. A radially incised outlet 11 is formed, a toilet bowl 10 in which a plurality of fastening members 23 are coupled to the upper outer periphery； The toilet bowl 10, the screw 12 is screwed to the outer periphery of the stopper (12)； A disposable defecation bag 15 fixedly inserted into the defecation container 10； The elastic waistband 30 is fastened to the waist of the pet dog, and one end is integrally coupled to the waistband 30, and a coupling member 33 is coupled to the other end to be coupled to the fastening member 23. In the defecation device for a pet dog, comprising a plurality of elastic fixing bands 32, the defecation container 10 is formed with a support flange 13 protruding outward at the upper end, and the defecation container 10 The disc-shaped sealing member 11 is coupled to the lower end by interference fitting, and the defecation bag 15 is closed by placing the insertion hole 18 outwardly at the upper end and is closed to be closed to the defecation bag 15 to be joined to the surface 17 ) Is formed, and a fixing member is inserted into the insertion hole 18. According to the present invention, it is easy to post-treat feces due to the defecation activity of a pet dog while the pet dog does not well cover the bowel movement indoors by a defecation device worn on the pet dog, or the hygiene of the disposable defecation bag is hygienic. In addition, it is possible to remove the odor using a disposable deodorant or fragrance provided in a bowel movement bag, thereby realizing the convenience of management of the dog and improving the health of the dog.본 발명은 애완견이 집안에서 활동 중이거나 또는 집 밖에서 산책 중일 때에 애완견의 배변을 받아낼 수 있도록 하는 배변장치에서 배변한 봉지를 분리하고 새 배변봉지로 교체하여 결합하는 장치에 관한 것으로, 하부 중심에 방사상으로 절개된 배출구(11)
