The invention discloses a hysteresis-effect-based response method for a real-time electricity price by an air conditioner user. At present, integrated resources of the demand side can be adjusted in a certain range based on needs, thereby responding to the grid need in real time and participating in power supply-and-demand balancing. According to the response method disclosed by the invention, with consideration of the comfort level of the air conditioner user, a response strategy of setting the temperature-real-time electricity price is established based on a hysteresis effect. On the basis of combination of the hysteresis effect with the real-time electricity price response, the comfort level demand by the air conditioner user can be satisfied and high-efficiency participation in the demand side response can be realized. Air conditioning resources at the peak and valley periods can be invoked effectively to realize a peak-load shifting effect; the energy efficiency can be improved; and the electricity usage way can be optimized.