Abstract: The invention provides an automatic launching system for simulated training ammunition. It can mimic the effect of explosive detonation in close quarters battles without causing any casualties, and can ignite the fuze and launch the simulated training ammunition without gunpowder involved. The technical solution of the invention is that: the automatic launching system for simulated training ammunition comprises a launcher, a controller and a simulated training ammunition loaded inside the launcher. The Simulated training ammunition comprises an outer shell, a core and a fuze structure at the bottom of the simulated training ammunition. The piston cylinder of the launcher comprises vents in the cylinder sidewall for communicating the cylinder cavity with the launcher cavity. The lower part of the cylinder is connected to a high-pressure gas holder through a pipeline and a normally closed solenoid valve.