Disclosed is a hip bath hot water washing apparatus. The hip bath hot water washing apparatus which is capable of sit bath and hot water washing comprises a case； a toilet seat unit connected to the front of the case； a water tank installed at a side of the case； a water supplier connected with a water supply source to supply water to the inside of the water tank； a water heater which heats water stored inside the water tank； a water temperature detection sensor installed inside the water tank and measuring temperature of the water stored inside the water tank； a bidet function unit using the water stored inside the water tank to provide a hot water washing function； a hip bath function unit using the water stored inside the water tank to provide a hip bath function； and a control unit electrically connected to the bidet function unit and the hip bath function unit to control the operation of the bidet function unit and the hip bath function unit, wherein the bidet function unit comprises a washing nozzle unit installed inside the case and having a portion protruded below the toilet seat unit； a hot air supply unit installed inside the case and supplying hot air below the toilet sear part； a washing water supply unit connected to the water tank and the washing nozzle unit to supply washing water using the water stored inside the water tank to the washing nozzle unit, and the hip bath function unit comprises a hip bathtub attachable to/detachable from the toilet seat unit； and a hip bath water supply unit connected to the water tank and the hip bathtub to supply hip bath water using the water stored inside the water tank to the inside of the hip bathtub.좌욕 온수 세정기가 개시된다. 상기 좌욕 온수 세정기는 좌욕 및 온수세정이 가능한 좌욕 온수 세정기로서, 케이스； 상기 케이스의 전방에 결합된 변좌부； 상기 케이스의 일측에 설치된 수조； 급수원과 연결되어 상기 수조의 내부로 물을 공급하기 위한 물공급수단； 상기 수조 내부에 저장된 물을 가열하는 물가열히터； 상기 수조 내에 설치되고 상기 수조 내부에 저장된 물의 온도를 측정하는 물온도 감지센서； 상기 수조 내에 저장된 물을 이용하여 온수 세정 기능을 제공하기 위한 비데기능부； 상기 수조 내에 저장된 물을 이용하여 좌욕 기능을 제공하기 위한 좌욕기능부； 상기 비데기능
