Based on the constraints of geographical position and network transportation cost,a multi-agent based simulation model for dynamic evolution game is proposed,in which it is supposed that in a two dimensional plane multi inter-divided monopolistic markets are averagely distributed.

According to microeconomics,this paper discussed the road service and operation,including its natures, production characteristics, cost of production and consumption, monopolistic market.

Therefore,characteristic of displaying and mechanism of monopolistic market change much under that condi tion.

This paper has demonstrated the damage of monopoly by exposing the foreign MNCs tendency of market monopoly and hereby has suggested some countermeasures to solve this problem.

My article indicates the disadvantage of monopoly by exposing the foreign MNCs tendency of market monopoly,and suggests some measures to solve this problem.

Furtherly we discuss how to decide Optional Quality in monopoly market.

By evaluating monopoly market, the paper ana lyzes the advantages and d isadvantages of the monopoly.

In its analysis,exist the hypothesis of cost unchanged,its to say that the enterprises in total competition market have the same cost or marginal cost with enterprises in monopoly market.