Abstract: The game model is used to discuss the game problem among the countries practicing trade barrier policy, elaborate the decision of trade policy of single country and multicountries and explore the two trade barrier policies of tariff and nontarriff. This paper thinks that in the countries practicing tarriff barrier policy the change value of nominal tarriff rate is taken as the mutual payment, the value of which depends upon the development of enterprise; In the nontarriff barrier countries, when the leverage of game is controlled by the superior side in technology, the trade barrier is a variable concept.