With the increasingly fierce competition in the international engineering market,an economic and technologically reasonable and competitive bidding quotation is often one of the key factors in winning the bid.However,China's current project cost system is different from that of foreign countries,and it can not be blindly applied in the international engineering bidding.Therefore,the author introduces the three commonly used methods in the international engineering bidding quotation,namely,the modified quota method,the physical engineering quantity method and the social resource method,analyzes the application scope,advantages and disadvantages of each method,and gives the corresponding suggestions and application strategies,in order to provide reference for the future bidding quotation.