The invention discloses a selection method of a power demand response baseline calculation method based on load classification. After that, the load characteristics of the power saving network and theusers participating in the power demand response are calculated respectively, including the annual load static decline coefficient K and the annual average value sigma of the monthly load rate. And then taking the annual average value sigma of monthly load rate as abscissa, the annual static load descent coefficient K is the ordinate, and the provincial network load characteristic indexes K and sigma are taken as the quadrant crossover points. Users can be divided into three types: high load rate small fluctuation type located in the first quadrant, medium load rate medium fluctuation type located in the second quadrant and low load rate large fluctuation type located in the third quadrant. Then the baseline calculation method is selected according to the different user classification. The method can effectively improve the precision of the baseline load calculation based on the difference of the user power consumption behavior, and is helpful for fairly and reasonably measuring the user demand response scale.