Though the uncertainty of wind power,if demand response is considered in the power system dispatching to expand acceptance of wind power,it will be able to improve the stability of power system.The resources in the demand side are put into the optimized scheduling model.The economy of optimal is adopted as the objective function and the cost of transferring loads is included in the total cost of generating electricity,on the basis of which,the power constraint of controllable load in the demand side is added in order to improve the reliability of the scheduling operation.Mixed integer linear programming is used to optimize and then the day-ahead scheduling model considering the power constraint of demand response is set up.Finally the effectiveness of the proposed method is verified in the simulation of a 6-bus system.