Electric actuator

The utility model discloses an electric actuator which comprises a box body, a transmission output shaft, a worm, a driving source, a terminal box, a manual operation mechanism and a detection control component, the transmission output shaft is rotatably installed in the box body, a connecting end suitable for being connected with the outside is arranged on the transmission output shaft, and a worm gear is sleeved outside the transmission output shaft; the worm is rotationally arranged in the box body, a plurality of disc springs are arranged at the two ends of the worm, and the worm gear is in transmission meshing connection with the worm; the driving source is fixedly mounted on one side of the box body, and the driving source is suitable for driving the worm to rotate; the terminal box is arranged on the other side of the box body, and a terminal patch board suitable for being connected with an external circuit is arranged in the terminal box; the manual operation mechanism is suitable for coaxially rotati