Quality control device for laser positioning system and CT reconstruction system of radiotherapy equipment

The utility model discloses a quality control device for a laser positioning system and a CT (Computed Tomography) reconstruction system of radiotherapy equipment. The quality control device comprises a scanning module and a measuring scale, the scanning module comprises a plug-in layer and a container layer, a horizontal adjusting knob is arranged on the scanning module, and the plug-in layer and the container layer are connected together through the adjusting knob; the plug-in layer is provided with an inner group of layer thickness and reconstruction filament plug-ins and an outer group of layer thickness and reconstruction filament plug-ins, the outer surface of the plug-in layer is also provided with a cross center line mark with an included angle of 90 degrees and a plurality of square indication marking lines with different side lengths; the outer surface of the container layer is also provided with a 90-degree included angle cross center line mark; the container layer is also provided with two measuri