Automobile brake disc easy to disassemble and assemble

The utility model discloses an automobile brake disc easy to disassemble and assemble. The automobile brake disc comprises an installation base. According to the utility model, through the arrangement of the inclined surface of the first wedge block and the inclined edges of the movable inserts, a movable gap is formed between the opposite upper ends of the two groups of movable inserts after the first wedge block moves downwards, and then the upper ends of the two groups of movable inserts are close to each other by tightening the drawing screw; in the moving process, the two movable blocks are separated from the rusted part between the inner side of the annular groove and the outer wall of the circumference of the shaft head, so that the brake disc can be easily pulled out, and before disassembly, the rust remover is injected from the oil injection nozzle by unscrewing the oil nozzle end socket and enters the two oil grooves along the oil inlet holes, so that the rust is removed. And water permeates between