The invention provides an extension-type hospital bed with a dining table. The extension-type hospital bed comprises a base, a bed body, a temporary bed board and a movable bed board, wherein two parallel rails are arranged on the inner side of a bed frame of the bed body in the length direction, slide mechanisms are arranged on the rails, the movable bed board is arranged on the bed body, the temporary bed board is arranged on the movable bed board, the bed body is hollow, and a drive assembly for driving the movable bed board to extend out of the bed body is arranged in the bed body. When the extension-type hospital bed is needed, the movable bed board is driven by the drive assembly to extend out of the bed body, and the temporary bed board can cover the position where the movable bed board moves away to form an integrated bed board to be used by a patient; thus, the extension-type hospital bed can save space for a ward.