Based on the theory of inventive problem solving (TRIZ), a simulated jet projectile was developed to enhance the simulation realism of the patriotic education base. The projectile and the cartridge case of the projectile can be quickly separated and combined, and the projectile is ejected at a certain distance under the action of air pressure. During firing, the cutter installed at the bottom of the cartridge case moves towards the direction of the projectile along the sliding cylinder to cut off the fastening band fastening the pressure tank plug at the bottom of the projectile, the high-pressure gas in the pressure tank is ejected, and the reaction force of the gas ejects the projectile out of the cartridge case to complete the firing of the projectile. The results show that this method can effectively solve the problem of large destructive and short launching distance of the simulated projectile, and reduce the loss of the simulated projectile.