There are several kinds of exchanges existing in electricity market

such as bilateral contracts

monthly bidding

day-ahead bidding etc.

so it’s necessary to investigate the participants’ strategy and market interrelation among the different types of exchanges. This paper stands on the point of the operators and monitors of electricity market and provides a method to analyze the integrated performance of the whole market with different kinds of exchanges

based on the market data. First

it induces the general principle of the interaction between the deal outcome and influencing factors. Base on the principle

it deduces the sufficient condition and necessary condition of Pareto efficiency of multi-exchanges in electricity market

then introduces the methods to analyze the participants’ strategy and market conditions. Examples and practical results from electricity market are presented to illustrate the proposed ideas.