The simulation of the electrical power market is very important to the market participants and the market governors. The simulation is a very useful tool for the research on the electricity market and its running. This article centers mainly on how to build the simulation system. One key issue to build the simulation system is to adopt different simulation models to suit different market participants such as the market administrator, the independent schedule center, the independent power supplier and the power purchase company, etc. In this article the different models are mentioned, the simulation system of electricity market based on the B/S software architecture is designed and explored, simultaneously some of the simulation results are offered.