The present invention relates to a separable three tub-type hot-cold foot bathing device. Provided is a separable three tub-type hot-cold foot bathing device, in which each water storage tank is separable from a bottom plate in the hot-cold foot bathing device having three tub-type water storage tanks including one hot water storage tank and a pair of cold water storage tanks so that the hot-cold foot bathing device can be manufactured at a reduced cost and can be used with convenience. The separable three tub-type hot-cold foot bathing device according to the present invention includes one hot water storage tank that has a body having an open upper surface for water storage therein, has a heating wire in a bottom portion for the heating of the stored water, has a control panel including a power supply unit for power supply, a temperature sensor for temperature detection, a power switch, and a display unit in and out of the body, and has multiple protruding receiving protrusions on a lower surface of the body； a pair of cold water storage tanks that have bodies having open upper surfaces for water storage, have cooling pack fixing units for fixed cooling pack installation in the bodies, and have multiple protruding receiving protrusions on lower surfaces of the bodies； and a fixed plate that is configured to have a plate-shaped member with the one hot water storage tank and the pair of cold water storage tanks fixedly installed on the upper surface thereof and has multiple receiving grooves formed on the upper surface to correspond to the receiving protrusions on the lower surfaces of the hot water storage tank and the cold water storage tanks.본 발명은 분리형 삼조식 냉온교차 족욕기에 관한 것으로, 한 개의 온수조 및 한 쌍의 냉수조를 포함하는 삼조식 저수조로 이루어진 냉온교차 족욕기에서 각각의 저수조를 바닥판으로부터 분리 가능한 구조로 구성하여 냉온교차 족욕기의 제작비용이 절감되도록 함과 아울러 사용상의 편의성이 향상되도록 한 분리형 삼조식 냉온교차 족욕기를 제공함에 그 목적이 있다.이를 위해, 본 발명에 따른 분리형 삼조식 냉온교차 족욕기는, 상면이 개방된 몸체로 이루어져 내부에 물이 저장되고, 바닥부에는 저장된 물의 가열을 위한 가열선이 설치되며, 몸체 내.외부에는 전원 공급을 위한 전원부와, 온도검출을 위한
