Fixing structure capable of simplifying working procedures and convenient to disassemble and assemble

The utility model discloses a fixing structure capable of simplifying working procedures and convenient to disassemble and assemble, which belongs to the technical field of automobile multimedia system fixing devices and comprises a panel assembly, a PCB (printed circuit board) assembly and a rear cover, the inner side of the panel assembly is provided with positioning columns, supporting columns, screw columns and rear cover positioning columns, the rear cover is provided with convex hulls and rear cover positioning holes, the PCB assembly is provided with positioning holes, and the rear cover positioning columns are provided with convex hulls. The surface, facing the panel assembly, of the PCB assembly is provided with a front copper laying area matched with the supporting columns, the surface, facing the rear cover assembly, of the PCB assembly is provided with a back copper laying area matched with the convex hulls, and the PCB assembly and the panel assembly are assembled through the positioning holes an