This paper introduced the composition of Airborne dispenser, utilizing Monte Carlo test and compatibility test to obtain Airborne dispenser's bombing ranges with equal precision. The Airborne dispenser's hit accuracy was assessed by using simulation. Interference model of mathematical simulation and calculation method of miss distance, and then set up mathematical simulation's test project. According to the Mathematic model, a computer program was developed and simulation results were obtained. Finally, it was found error difference between Simulation results and really test.