Width-adjustable folding bed

The utility model discloses a width-adjustable folding bed, which comprises a first bed plate, a mattress, a rotating shaft and a first support rod, the mattress is arranged at the top of the first bed plate, a silencing layer is adhered to the bottom end in the first bed plate, a drawing plate is mounted at the top end in the first bed plate, and the rotating shaft is arranged on the rotating shaft. A handle is mounted on the outer wall of the front end of the drawing plate; the rotating shaft is installed at the right end of the first bed board, a second bed board is installed at the right end of the first bed board, and an extension assembly is installed at the right end of the second bed board. According to the width-adjustable folding bed, the extension bed board and the second bed board are connected through the rotating blocks, the extension bed board and the second bed board can be kept on the same horizontal line through rotation of the rotating blocks, and therefore the effect of adjusting the size