The present invention relates to a bad smell removing device, and more specifically, to a device which is used when consistently removing bad smells of a washroom and others. A bad smell removing device according to the present invention comprises: an intake part including a connection pipe which is formed horizontally, and a plurality of suction holes which are formed in a top part of the connection pipe such that the suction holes are spaced apart from each other in an equal distance a driving part including first connection pipes which are coupled to end portions of the connection pipe of the intake part and are formed on front portions of first suction cases, a suction motor which is inserted between the first suction cases and second suction cases, and second connection pipes which are formed on end portions of the second suction cases and an operation part of which connecting through-holes are coupled to end portions of connection pipes fixed to end portions of the second connection pipes, in which the connecting through-holes are formed in side surfaces of an electrolysis device. The electrolysis device includes fixing parts formed on both sides thereof to fix a positive electrode member and a negative electrode member that are inserted into the electrolysis device, and includes a discharge port formed in a rear portion thereof and a top portion formed into a cover. A bad smell removing device according to the present invention has economic feasibility in the price aspect and has an effect of improving convenience of installation and mobility, by simply replacing a toilet bowl cover only such that the replaced toilet bowl cover is used while using an existing toilet or toilet bowl.COPYRIGHT KIPO 2016본 발명은 크게 흡기부, 구동부 및 작동부로 이루어지며, 상기한 흡기부는 수평으로 연결관이 형성되고, 연결관의 상부에는 등 간격으로 다수개의 흡기공이 상부에 형성되고 구동부는 상기한 연결관의 말단부에는 제1연결관이 결합 되고, 제1연결관은 흡기 제 1 케이스의 전면부에 구비되고, 흡기 제 1 케이스와 흡기 제 2 케이스의 사이에 흡기모터가 삽입되고,상기한 흡기 제 2 케이스의 말단부에 제 2 연결관으로 이루어지며 작동부는 제 2 연결관의 말단부에 연결관이 고정되고, 연