PURPOSE: A low temperature storage unit is provided to separate an air conditioning room from a storage, thereby being generally used by connecting the cooling cycle of the air conditioning room to other devices. CONSTITUTION: A low temperature storage unit comprises a storage(200) which stores products, and an air conditioning room(300) which is combined with the storage by screw jointing to be attachable in order to supply cool air to the storage. The storage comprises support rails(230), trays(240), an air outlet(220), an exhaust fan(221), and an opening and closing member(222). The air conditioning room comprises fixing angles(311,312)； a compressor(370), a condenser(350), an evaporator(330), a reservoir, a blower(360), a heater(380), an inhalation hole(320), a suction fan(321), and an opening and closing member(322).본 발명은 저온 저장장치에 관한 것으로서, 저온 저장장치는 물품이 보관되는 저장고와, 상기 저장고와 고정나사의 나사 결합에 의해 착탈가능하게 결합되어 저장고로 냉풍을 공급하는 공조실을 포함하는 저온 저장장치를 특징으로 한다.
