Medicine injection equipment

The embodiment of the invention relates to medicine injection equipment which comprises a shell, a driving device and an injection needle device, the shell is used for fixing the driving device and the injection needle device, and the driving device comprises a swing module, a driving module, a retaining module and a propelling module; the injection needle device comprises a soft needle sliding block, a force storage element, a hard needle sliding block, an energy storage element, a sliding way groove, a stop rod, a pushing element, a limiting pin and a triggering element. The equipment integrates the driving module and the automatic needle injection module which are mutually matched by a ratchet wheel and a screw rod, so that the manufacturing cost and energy consumption are reduced, the weight is reduced, and the use and the carrying are convenient; output is more stable, direct and reliable, and accurate control over the liquid medicine injection amount of a patient is facilitated; the needle injection dev