The present invention relates to a device for notifying the defecation of a pet dog in a defecation device that allows the dog to receive defecation when the dog is active in the house or walking outside the house, in the defecation device for the pet dog, radially at the lower center A cut-out container 10 in which a cut-out outlet 11 is formed, and a plurality of fastening members 23 are coupled to the upper outer periphery； The toilet bowl (10) is screwed to the lower outer periphery of the stopper (12)； Disposable defecation bag (15) inserted and fixed inside the defecation container (10)； A waist band 30 having elasticity by fastening to the waist of the pet dog, and a coupling member 33 having one end integrally coupled to the waist band 30 and coupled to the fastening member 23 at the other end are provided. In the defecation device for a pet dog comprising a plurality of elastic fixing band 32, the case 41 coupled to one side of the toilet 10； A detection unit 44 installed in the case 41 to detect bowel movements of a pet dog； A control unit 45 for outputting a control signal as a detection signal of the detection unit 44； It comprises a display unit 46 for notifying the bowel movement of the pet dog as a control signal of the control unit 45. The present invention is easy to post-process the feces due to the defecation activity of the pet dog while walking, or the pet dog does not cover the bowel movement indoors by the defecation device worn on the pet dog. At the same time, it is possible to promptly process bowel movements by notifying the bowel movement information visually, thereby improving the convenience of managing dogs and improving the health of dogs.본 발명은 애완견이 집안에서 활동 중이거나 또는 집 밖에서 산책 중일 때에 애완견의 배변을 받아낼 수 있도록 하는 배변장치에서 애완견의 배변을 알리는 장치에 관한 것으로, 애완견용 배변장치에 있어서, 하부 중심에 방사상으로 절개된 배출구(11)가 형성되고, 상부 외주연에 복수의 체결부재(23)가 결합된 배변통(10)； 상기 배변통(10) 하부 외주연에 나사 결합되어 밀폐시키는 마개(12)； 상기 배변통(10) 내부에 삽입 고정되는 일회용 배변봉지(15)； 상기 애완견의 허리에 체결하여 고정하는 탄성을 갖는 허리밴드(30), 및 일단이
