The numerical simulation technology is applied to create the numerical simulation model on nozzle atomization.It can describe the flowing characteristic of nozzle in sprayer well and truly.The APDL procedure is programmed to simulate the flow field of nozzle in sprayer.It can adapt to all kinds of numerical simulation in different working condition.In the meanwhile,it can increase the efficiency of analysis,optimize the atomization quality of nozzle,therefore,much developing effect will be obtained in the end.