oven hot air dynamics performance and the oven structure of a gravure printing machine size directly affect printing drying effect. Application of fluid mechanics to the oven analyzes hot air flow kinematics, dynamics and energy, using computational fluid dynamics method to the existing oven conducts the analysis of hot air dynamic simulation and quantization. The simulation results and experimental datas showthat it is feasible to use the method of computer simulation on the fluid dynamics analysis of oven structure. Through the calculation and simulation analysis, the oven inner working states are cleared, the key process parameters are determined and optimized. The research results provide a theoretical basis for the improvement and optimization of gravure printing machine oven structure.