Electric bed frame with backrest sliding function

The utility model relates to an electric bed with a backrest sliding function, which comprises a bed frame, a bed board and a linear motor, the bed frame comprises a fixed frame and a sliding auxiliary frame, the sliding auxiliary frame is arranged in the front section or the rear section of the fixed frame and comprises a rotating section and a sliding section which are rotationally connected with each other, and the sliding auxiliary frame is arranged on the bed board. The two ends of the driving motor are rotationally connected with the rotating section of the sliding auxiliary frame and the fixed frame correspondingly. Bed plates are laid on the rotating section and the sliding section of the sliding auxiliary frame respectively, and the two bed plates are rotationally connected through a hinge. According to the electric bed frame, the movable auxiliary frame which can slide in the fixed frame and can also rotate is arranged, so that the backrest part of the electric bed frame realizes the functions of di