An actuator, the actuator is used for the camera unit. The actuator includes: a seat configured to be assembled with a first lens and a fluid lens of the camera unit; a stator assembly fixedly connected to the seat; a focusing mover assembly configured to be connected with the fluid lens; and an anti-shake mover assembly configured to be connected with the first lens. The focusing mover assembly is configured to move along a first direction of the seat by interacting with the stator assembly, for adjusting a curvature of the fluid lens, and the anti-shake mover assembly is configured to translate in a plane perpendicular to the first direction by interacting with the stator assembly, for driving the first lens to move.