Cargo transport can perform many type missions, such as airlift, airdrop and airborne etc. Each type mission need corresponding cargo configuration by installing mission equipment in the cargo to meet the need of the mission. The configuration proportions of mission equipments must consider the mission capability rate, economy and utilization ratio. The paper take small scale cargo transport fleet as the object, set up a mathematical model based on the optimization principle and boundary conditions, use the linear weighted sum approach to solve the question, give a sensitivity analysis and bias analysis, finally get the best configuration proportion of every mission equipment. This method can solve the mission equipment configuration problem for small scale cargo transport fleet.