The present utility model provides an electrically powered needle-free injector (100), comprising: a needle-free injector body (120)； and a needle-free injection end (130) extending distally from the needle-free injector body (120) for medicine administration, the needle-free injector body (120) comprises: a housing (3), an inside of which is divided into a pressurized injection chamber (123) and a motor chamber (124)； a pressurized injection assembly (170) disposed within the pressurized injection chamber (123)； a needle-free injector locking mechanism (180) at least partially disposed within the pressurized injection chamber； and a motor assembly (190) disposed within the motor chamber (124). The present utility model has a beneficial effect that it may provide a power source for the needle-free injector to electrically take medicine and inject by a built-in motor； it works reliably, is used conveniently, and has a small size.
