The invention discloses a laser marking device for automobile parts, and relates to the technical field of automobile marking. The laser marking device for the automobile parts comprises a placement seat, a partition plate is fixedly installed at the top of the inner side of the placement seat, the top, away from the placement seat, of the partition plate and the bottom of the inner side of the placement seat are fixedly installed, an exhaust pipe is fixedly installed on the outer wall of one side of the placement seat and communicates with the inner part of the placement seat, a first supportand a second support are fixedly mounted at the top of the placement seat and are arranged at adjacent positions, a supporting plate is fixedly mounted on the adjacent side walls of the first supportand the second support, a laser head is fixedly mounted at the bottom of the supporting plate, a shell body is fixedly mounted at the top of the placement seat, a pushing plate is movably mounted atthe bottom of the inner side of the shell body, a spring is fixedly mounted at the top of the pushing plate, and first openings are formed in the two side walls of the shell body correspondingly. Thelaser marking device for the automobile parts is convenient to operate, avoids influence on the environment, is beneficial to environmental protection to a certain extent, and is better than a traditional mode.