Equations of confirming the parameters of device were established through the study of the characteristics of high-speed dot-matrix pulse jet generator which is important unit of the printing machine. Dynamical equations which could be rule for calculating parameters of valve and pipeline were established. Consequently, theory foundation for design and manufacture of high-speed dotmatrix pulse jet generator is provided. The driver mode of jet generator was analyzed and optimized. The design and analyses are proved feasible by experiments.