A physiological adjustment system, intelligent underpants including the physiological adjustment system and a physiological adjustment method for implementing a physiological adjustment using the physiological adjustment system are disclosed. The physiological adjustment system includes: a heating module for heating a human body based on a received heating command; a detection module for detecting a physiological state to obtain physiological state information; and a control module for sending the heating command to the heating module. The heating command includes a first heating command generated based on the physiological state information.