The simulation data with complete information under constraint conditions, price compared with relatively close, also proved A method for the ancient a Nash equilibrium expectation is desirable. The given table per plant has two sets of four cases, a Nash equilibrium of the ancient. by The simulation results of table can be seen:(1)under the complete information and minimum and maximum output by units under the condition of constraints, the total of all plant Force than constrained circumstances, but lower price. The complete information .(2) under the minimum and maximum output unit under constraint, some units, this is by quotation In the constraint by the maximum output, which offer, reduce output, forcing a output in Kuhn k-t (tower), Point. With complete information without constraint condition, the total output of all power, but the price has dropped Rising. (3) the complete information on the simulation data with complete information under constraint conditions are compared, ancient one Nash Heng solution approaches, this method proves the expectations for a Nash equilibrium ancient is desirable, can use To direct university of science and technology of master degree theses However, compared with table, under various conditions were obviously improved, and price are higher,but total power output That dropped in the power plant, the less competitive and the higher price . This chapter summary :Power units bidding online game behavior is an obvious, but in any game, both the Nash equilibrium For optimum reaction between participants a junction. On the demand side elastic of power market, the ZhangJianLi Incomplete information under the constraint condition of ancient model is given, and the calculation method of solving the model, The power output of a Nash equilibrium ancient expectations, and by using the formula of the solution into units will offer curve. Game is important information about each opponent strategies and benefit gambling sides of information. Profit is the game After the implementation of the strategy of the party. But in most cases, the game's income and cannot be accurately identified. Therefore, in the complete information on other units, the accuracy of the estimation operation cost coefficient is very important. This chapter is a certain error range in the estimated cost coefficient of circumstances, through example analysis shows that, The results of complete information and very close to that of the proposed method can be used as the completely Information online bidding power unit offer the curve.