The invention relates to a second-level stepping vehicle top framework structure combining the single-layer top with the double-layer top. The structure comprises a first top framework area located in front of the center of a middle door and a second top framework area located behind the center of the middle door; the first top framework area is of a double-layer top structure, the portion, in a middle corridor area, of the second top framework area is of a single-layer top structure, the portions, on the two sides of the middle corridor area, of the second top framework area are of a double-layer top structure, and an air channel of the first top framework area and an air channel of the second top framework area are located in the same plane. According to the technical scheme, the center of the middle door serves as a boundary line, the first top framework area in front of the center of the middle door is designed to be of the double-layer top structure, the second top framework area behind the center of the middle door is designed to be of the structure combining the single-layer top with the double-layer top, the standing height space in a vehicle behind the middle door and the installing consistency of the air channels in the vehicle are guaranteed, the developing cost of interior molds is reduced, the developing cycle of the interior molds is shortened, and meanwhile the finished vehicle weight is reduced.