Workbench with limiting structure

The workbench with the limiting structure comprises four sets of supporting columns and a workbench body, expansion mechanisms are arranged on the two side faces of the workbench body, each expansion mechanism comprises a side plate, two sets of supporting assemblies and two sets of fixing assemblies, the side faces of the side plates are rotationally connected with the workbench body through first rotating shafts, and the supporting assemblies are arranged on the side faces of the side plates. The supporting assembly comprises an inclined supporting rod and an extending block, and the inclined supporting rod and the extending block are rotationally connected through a second rotating shaft. Through the designed expansion mechanism, when excessive parts and tools are placed on the surface of the table body in the using process, the side plates can be unfolded, then a part of the parts and the tools are placed on the unfolded side plates, the operation space of an operator is increased, the operator can conduc