Combining and expanding structure of layered frame

A combining and expanding structure of a layered frame, the layered frame including a single-rod frame rod and a plurality of layer plates, a combining hook being respectively combined at four distal corner parts of the layer plate, the combining hook being provided with a buckling hook part capable of being buckled with a rod body of a frame rod, wherein:

• each of the combining hook includes a combining part capable of being respectively combined at the four distal corner parts of the layer plate, and a buckling hook part integrally extended from one side of the combining part;
• the combining part of the combining hook is designed to be formed with different structural statuses with respect to the layer plate made of different materials and types, the buckling hook part of the combining hook is designed in a half-thickness status, a hook slot thereof is formed in a non-arched polygonal status with respect to the frame rod of the layered frame, when the combining hook is assembled at the four distal corner parts of the layer plate, the combining hooks at two sides are oppositely arranged, so that the buckling hook parts of the combining hooks at the two sides of the layer plate are in a staggering status in a vertical direction, when the horizontal specification of the layered frame is desired to be expanded, only one set of lateral frame is required for enabling the desired layer plate to be buckled and assembled between the lateral frame rod of the existing layered frame and the new lateral frame rod, and the buckling hook parts of the combining hooks of the adjacent layer plates are able to be complementarily stacked, thereby achieving an objective of combining and expanding the layered frame.