A temperature control method is provided according to an exemplary embodiment of the invention. The method includes: sensing a temperature by a temperature sensor and obtaining a temperature value; performing a cooling-down operation based on a first cooling-down level and updating a level parameter to a first level parameter if the temperature value reaches a first threshold value; and performing the cooling-down operation based on a second cooling-down level according to the first level parameter and updating the level parameter to a second level parameter if the temperature value is not less than the first threshold value during a first time range after the cooling-down operation based on the first cooling-down level is performed, and a cooling-down ability of the cooling-down operation performed based on the second cooling-down level is higher than a cooling-down ability of the cooling-down operation performed based on the first cooling-down level.