Disclosed herein are a system and method for controlling the temperature of a user. The wearable device may include a first temperature measurement unit configured to measure a temperature of a user and a control unit configured to calculate a temperature difference by comparing the temperature measured by the first temperature measurement unit with a previously stored temperature of the user at normal times, provide temperature measurement information to an external device if the calculated temperature difference is more than a reference temperature difference for a predetermined time, and receive service information for controlling the temperature of the user based on the temperature measurement information from the external device.