This utility model discloses an adjustable
display board fixing device, relating to the field of product display technology. It includes a support base with four sets of mounting brackets on its outer side. A fixing frame is fixed to the top of each mounting bracket, and a
display board body is snapped into the inner wall of the fixing frame. A limiting component for limiting the position of the
display board body is provided on the top of the fixing frame. The advantages of this utility model are: the installation area of the display board body can be adjusted by moving the connecting frame, accommodating display boards of different sizes, and four sets of display board bodies can be installed simultaneously. The movement of the second fixing sleeve drives the movement of the second connecting block, causing the second connecting rod to slide inside the second connecting block. The second connecting rod pulls the first connecting rod to rotate inside the first connecting block, and the rotation of the first connecting rod drives the mounting bracket to rotate, thereby achieving angle adjustment of the display board body.