The invention provides a control method for a draught fan of a refrigerator compartment. The method comprises the following steps of: detecting a first temperature of a compartment, if the first temperature of the compartment is higher than a first predetermined temperature, refrigerating the compartment and detecting a door of the compartment whether the door is opened or not, if the door is closed, controlling the start of the draught fan; if the first temperature of the compartment is lower than a second predetermined temperature, stopping
refrigeration and closing the draught fan, and detecting an
evaporator of the compartment whether is defrosted or not, if the
evaporator is defrosted, controlling the start of the draught fan and judging a setting temperature of the compartment whether the setting temperature is higher than a third predetermined temperature, if the setting temperature is higher than the third predetermined temperature, judging
defrosting is ended or not, if the
defrosting is ended, controlling the closing of the draught fan; if the setting temperature is lower than the third predetermined temperature, judging the
defrosting time whether reaches scheduled time or not, if the defrosting time reaches the scheduled time, controlling the closing of the draught fan; wherein the second predetermined temperature is lower than the first predetermined temperature. In the embodiment disclosed by the method, when the
evaporator is defrosted, the draught fan can be selectively started, therefore,
humidity of the compartment can be effectively improved, a
moisture preserving demand of the compartment can be met, and freshness retaining time of foods can be improved.