The simulation of two-phase flow conditions in the lateral jet flow field of micro pulse solid rocket engine under different operating conditions was carried out, in addition to analyze two-phase flow at different missile attack angle conditions, and the condition of the surface parameters of missile body influenced by particles was also analyzed. The result of research showed that, under the same particle mass fraction conditions, the smaller the particle diameter, the greater negative influence on the control effect of the jet flow. In the case of two-phase flow, the partile phase had a great influence on the structure of the flow field, and the particle played a negative role in the control of jet flow. When the missile is at the positive angle of attack, it is good for the jet control function, the greater the angle of attack, the better control effect.