Power user data acquire system has been large-scale constructed and widely applied. But the two-way interaction function between user and grid is not completed. IEC CIM standard and SEP2 smart energy acquisition communication standard are deeply researched. It comparatively analyzes the difference of these standards in the model design method, relationship between resources, data transmission format, UML model diagram, message response mechanism and other aspects. It put forward the method of designing interaction model of power user data acquire system. Mixing the resource of IEC CIM and SEP2 standard, it developed the models of the acquisition device layer and main station layer. It completed the two-way interaction function between user and grid, enhanced the customers’ experience of power consumption, guided society to use power scientifically and reasonably, provided the technical support for realizing two-way interaction of energy flow, information flow and business flow.