The invention provides an automobile sun shield, relates to the technical field of automobile accessories, solves the problems that the size of an existing automobile sun shield cannot be adjusted, the shielding range is limited, and the use requirements of a driver and passengers cannot be met, and further solves the problems that after the sun shield is used for a long time, the interface part of the sun shield is easily abraded and damaged, and the sun shield is inconvenient to replace. The automobile sun shield comprises a sun shield, wherein the sun shield comprises a make-up mirror and an inner groove, the inner groove is formed in the front end of the sun shield, the make-up mirror is embedded in the left end in the inner groove, the bottom end of the sun shield is rotationally connected with an auxiliary plate, the left side of the top end of the sun shield is clamped with a fixed inserting opening, and the right side of the top end of the sun shield is rotationally connected with a movable clamping base. The left side of the top end of the sun shield is provided with a connecting plug, the connecting plug and the fixed inserting opening are of a clamping structure, and when the sun shield is damaged, the sun shield and the fixed inserting opening can be rapidly separated under the action of the connecting plug and the fixed inserting opening.