A high-speed connector for an automobile includes a cable connector, a board connector connected to the cable connector, and elastic sliding blocks provided on two sides of the cable connector. The sliding blocks on two sides are configured separately or are integrated together. The cable connector includes a housing, a contact body and a wire. The contact body is installed in the housing. The contact body contacts and is connected to the board connector. The wire is connected to the contact body and protrudes out of the housing. The housing includes a main body portion and side snap-fit plates provided on two sides of the main body portion. A side snap-fit groove is provided on the side snap-fit plate. Side snap-fit clasps are provided on two sides of the board connector.