本文研究了国际工程承包合同常用的几类结算方式的经济本质、适用的经济环境，并对支付费用的大小进行比较研究。这几类不同的结算方式分别为：总价合同（ＬＳＣ），成本补偿合同（ＣＲＣ），成本激励合同（ＣＩＣ），多激励合同（ＭＩＣ）。 一、不同结算方式的数学模型 设有 This paper studies the economic nature of the several settlement methods commonly used in international engineering contract, the applicable economic environment, and compares the size of payment costs. These different types of settlement are: the price contract (LSC), cost compensation contract (CRC), cost incentive contract (CIC), multiple incentive contracts (MIC). First, the mathematical model of different settlement methods are provided