The utility model relates to an air conditioning adjustment technique field provides an air conditioner. This air conditioner connects adjustable refrigerant memory between outdoor heat exchanger and throttling arrangement, the memory includes cylindricality casing and stopper part, forms the stock solution room between stopper part and the cylindricality casing, be equipped with inlet and leakage fluid dram on the cylindricality casing, the stopper part is connected with actuating mechanism, actuating mechanism in according to air conditioner refrigeration circuit refrigerant pressure value control and fill in the part and move. In this scheme, when refrigerant high pressure pressure value was too high in air conditioner, then the part motion of actuating mechanism drive stopper was so that the increase of stock solution room volume to the storage of partly refrigerant in the air conditioner pipeline reduces the pressure of refrigerant in the pipeline in the stock solution room, meet the demands up to refrigerant high pressure pressure value, and actuating mechanism control this moment stopper part keeps static. Consequently, this air conditioner can normally refrigerate under high temperature or even ultra high temperature environment, effectively solves the unable cryogenic problem of user's high temperature.