The subject innovation can be used in combination with integral or removable in the vent is equipped with a 112, the housing body 110 of the loaded cat litter 101 to the bottom surface so that the cat can defecation for ventilation in the upper ceiling, in the cat toilet ventilation device for, as a cat to use for bowel movement when odor emissions within the housing main body 110, the vent drive means 120 which may be provided with a ventilation fan or an air pump The first odor emission hose 132 that is connected to be integrally coupled or removably on one side vent 112 of the housing main body 110 and the other end is connected to the vent driving means 120 The connection one to the ventilation driving means 120 and the other side of the window (1), the lower window frame (2) having a second odor emission hose 134 is disposed exposed by the through-Sikkim out a hole in the outside for supporting a the including and to the cat inhaling the smell that is generated by the in-cat defecation housing body 110 through the operation of the ventilation driving means 120 during a bowel movement within the housing body 110 of ventilation thereby discharged to the window (1) outside for cats features a ventilation system for the bathroom. According to the present invention, there is provided a structural design that can be provided with a ventilation system with integrated or removable, can not even open the windows for ventilation and exhaust smells generated during a bowel movement as soon as the cat outside.본 고안은 상부 천정에 환기를 위해 환기구(112)가 구비되며, 바닥면에 고양이가 배변할 수 있도록 모래(101)가 적재되는 고양이 화장실의 하우징본체(110)에 일체형 또는 착탈형으로 결합하여 사용할 수 있는 고양이 화장실용 환기장치에 있어서, 상기 하우징본체(110) 내에서 고양이가 배변시 냄새 배출을 위해 사용하기 위한 것으로서, 송풍팬 또는 에어펌프로 구비할 수 있는 환기구동수단(120) 상기 하우징본체(110)의 환기구(112)에 일측이 일체 결합 또는 착탈 가능하도록 연결되고 타측이 상기 환기구동수단(120)에 연결되는 제1 냄새배출호스(132) 상기 환기구동수단(120)에 일측이 연결되고 타측은 창문(1)을 지지하는 하부 창문틀(2)에 구멍을 내어 관통시킴에 의해 외부로 노출 배치시킨 제2 냄새배출호스(134)를 포함하며, 상기 하우징본체(110) 내에서 고양이가 배변시 환기구동수단(120)의 구동을 통해 하우징본체(11
