PURPOSE: An average pressure controlling method of a kimchi refrigerator is provided to maintain an average pressure by forming a flow path in order to supply the refrigerant only to the storage room which is currently used by fixing a step valve in case only one storage room of the two storage rooms are used in a lower temperature environment.CONSTITUTION: An average pressure controlling method of a kimchi refrigerator includes a step determining whether an ambient temperature is included in a low temperature range or not a step confirming whether only one storage room is used among multiple storage rooms if an ambient temperature is included in a low temperature range a step forming the flow path of a refrigerant only to a storage room being used if only one storage room is used among multiple storage rooms. An ambient temperature of a low temperature range is 5°C or less. In a step forming the flow path of a refrigerant only to a storage room being used, a valve forming the flow path of a refrigerant maintains an open state to a storage room being used and maintains a close state to the other storage room. A valve is a step valve.COPYRIGHT KIPO 2013[Reference numerals] (10) Compressor (20) Step valve driving unit (22) Step valve (30) Ambient temperature sensor (40) Average pressure controlling unit본 발명은 주변온도가 저온대역에 포함되는지를 판단하는 단계, 주변온도가 저온대역에 포함되면, 다수 개의 저장실 중 어느 하나의 저장실만을 사용하는지 확인하는 단계 및 다수 개의 저장실 중 어느 하나의 저장실만을 사용하면, 사용중인 저장실측으로만 냉매의 유로를 형성하는 단계를 포함하는 것을 특징으로 한다.
