The invention relates to a load identification method of a baseline load model based on a regression analysis approach, which includes the following steps: S1, classifying power user data according tothe user type and the region; S2, for each type of users of the power user data after classification, selecting the power load data of individual users and relevant influencing factor data to establish a regression formula; S3, further obtaining the baseline load of other users in the type of group users in the demand response period according to the regression formula; and S4, identifying a peakstaggering potential load by using the baseline load obtained. Compared with the prior art, the method of the invention has the advantages of high accuracy and strong applicability and pertinence.