The invention discloses a power interface structure of an automobile data recorder. The power interface structure comprises a mounting plate, an interface assembly, a clamping seat and an end cover. The mounting plate is fixedly mounted on a ceiling, and is positioned between the ceiling and a roof metal plate; a first inserting hole is formed in the mounting plate and is opposite to a through hole in the ceiling; the interface assembly is mounted on the mounting plate; the clamping seat is mounted on the mounting plate, and the interface assembly is located between the mounting plate and theclamping seat; the interface assembly comprises a power supply connecting port, and the opening direction of the power supply connecting port faces the through hole in the ceiling; the end cover comprises a cover plate and clamping pins, a second inserting hole is formed in the cover plate, and the second inserting hole and the first inserting hole are oppositely formed; the clamping pins are fixedly connected with the cover plate and connected with the clamping seat; the cover plate abuts against the side, away from the mounting plate, of the ceiling. The automobile data recorder can be conveniently installed on the ceiling.