The work aims to optimize the loading of ammunition in containers based on the bracket to achieve the goal of rapid and efficient ammunition unit support and enhance the ammunition mobile support and direct support capability, for the purpose of reducing the reserve number of troops ammunition support units and service time and speeding up the ammunition support reaction speed. The optimization mode of ammunition bracket loading was established. The solving idea and algorithm steps were put forward based on the heuristic algorithm. As a result, through the example, the effectiveness of the optimization model was proved. Taking the 12 kinds of ammunition to be loaded as an example, the average space utilization rate of the bracket was 60.25% and the average area utilization rate was 89.94% with the algorithm. It provides a technical method to solve the problem of ammunition loading optimization and finds that the standard brackets and boxed ammunition are not considered to match each other during the design. This factor should be considered for such design in the future.