A virtual power plant（VPP）aggregation method of large scale diversified flexible loads is proposed based on the idea of cyberphysical system. Firstly, a devicelevel CPS model is proposed, and a unified physical dynamic model and a bidding strategy are built based on user satisfaction. The proposed method can realize autonomous control on the premise of electricity satisfaction, user privacy and device security. Secondly, based on the market equilibrium mechanism, a coordination strategy for large scale flexible loads is proposed, achieving equal degree of satisfaction in load cluster and reducing communication bandwidth as well as control complexity. Thirdly, a VPP aggregation method is proposed to promote the hierarchical aggregation of physical dynamics and demand characteristics. Finally, the effectiveness of the proposed method is verified by a VPP simulation case, which aggregates diversified flexible loads including distributed energy storages, electric vehicles and airconditioners.