To provide a freezing method of food and a freezer capable of preventing loss of weight of frozen food due to water vapor dissipating from surface of food in a freezing process and crack generation at a frozen food surface as much as possible and capable of improving article value .

A freezing storage 20 is equipped with a refrigerating coil 8 and an air blower 10 in a cabinet 2, a surface temperature sensor 24 for detecting surface temperature of food F and a heat exchange load increase/decrease means 28 for increasing/decreasing heat exchange load at an evaporator consisting of the refrigerating coil and an air blower and raising or lowering evaporation temperature. Till the food surface temperature detected by the surface temperature sensor is lowered to a temperature at which a film of ice can be generated on the surface, the evaporation temperature at the refrigerating coil is lowered by operating the heat exchange load increase/decrease means to a heat load decreasing side and temperature of air circulated in the storage by the air blower is lowered to a low temperature. After the surface temperature is lowered to a temperature at which the film of ice can be generated, the heat exchange load increase/decrease means is operated to a heat exchange load increasing side to conduct quick freezing.