Abstract: Evaluating the effects of users’ demand response (DR) accurately has been increasingly important with the promotion of demand response. However, there exists a relatively large error in the generic baseline calculation method because it ignores the operating characteristics of air conditioning. This paper builds an air conditioning’s DR effects evaluation model and proposes a baseline calculation method based on the difference between indoor and outdoor temperature. It is shown in case study that the method proposed in this paper can improve accuracy of baseline calculation effectively.