In order to study the effect of different bubble heights on the projectile, the model of micro bubble actuators with different heights is established, and the aerodynamic simulation of different projectile is carried out, the influence of micro bubble actuators with different heights on the projectile resistance coefficient is analyzed, and the flight process of the full trajectory is calculated. The simulation results show that adding micro-bubbles of different heights has little effect on the flight stability of the projectile. At the same Mach number and angle of attack, the drag coefficient of the projectile with bubble actuator is lower than that of an ordinary projectile, and a lift coefficient higher than that of an ordinary projectile, which can effectively increase the range and reduce the lateral deviation.