Light guide structure, automobile lamp and automobile

The invention discloses a light guide structure, an automobile lamp and an automobile. The light guide structure comprises a main body section and a tail section, wherein light entering the light guide structure is spread towards the tail section along the main body section, a part of the light is emitted from a light emitting surface of the main body section, and the other part of the light is emitted from the tail section; the tail section comprises a tail end face away from the main body section and a plurality of side faces inclined towards the tail end face; the sectional area from the near end of the tail section to the tail end face is sequentially reduced; and the near end is the end, close to the main body section, of the tail section, and light entering the tail section from the near end is emitted from the tail end face and all the side faces. A light guide with the structure can effectively diverge leaked light rays at the tail section, so brightness is more uniform, obvious bright spots at the ta