Headrest driving mechanism of automobile seat and automobile seat

The utility model provides a headrest driving mechanism of an automobile seat and the automobile seat. A headrest is rotatably arranged at the top of a backrest of a seat body. The headrest drive mechanism includes a back plate, a drive assembly, and a connection member. The driving assembly is arranged in the backrest and comprises a supporting component, a connecting rod driving component, a sliding component and a sliding driving component. The connecting component is of a rod-shaped structure, one end of the connecting component is rotatably connected with the supporting component, and the other end of the connecting component is fixedly connected with the lower end of the headrest. When an automobile is collided, the sliding driving component pushes the sliding component to slide along the back plate, and the connecting rod driving component can drive the supporting component to move between a first position close to the back plate and a second position away from the back plate. And then the connecting c