The interactive simulation between power market and power system includes energy flow， capital flow and information flow， etc. Taking into consideration of the simulation requirements， research method of power market simulation platform is proposed. It is emphasized that experimental economics should be adopted in a dynamic interactive simulation， and multi-criteria， multi-system and multi-player simulation should be supported. The simulation platform should also be capable of providing on-line risk quantitative analysis and decision support functions. Meanwhile， the software and hardware framework of the platform should be flexible and open， in order to be implemented for different application purposes. Functions of power market simulation platform are classified into three key elements， which are information obtaining， knowledge extraction and decision support. Based on these elements， function requirements of power market simulation platform are discussed and corresponding technologies are reviewed.