The invention relates to a turnover box conveying device and belongs to the technical field of light industrial product assembly line production equipment. The device comprises a gutter channel, a movable trolley frame, a movable trolley, a turnover box supporting box lifting mechanism, a turnover box supporting box, a turnover shaft driving mechanism and a turnover box supporting and releasing mechanism, wherein turnover box cavity partition plates are fixed to an upper portion of the gutter channel in the length direction of the gutter channel, the space between every two adjacent turnover box cavity partition plates forms a turnover box cavity, a gutter channel trolley receding cavity is formed between a lower portion of the gutter channel and a terrace, the movable trolley frame is arranged in the gutter channel trolley receding cavity, the moving trolley is arranged on the moving trolley frame, the turnover box supporting box lifting mechanism is arranged on the moving trolley, the turnover box supporting box is connected with the turnover box supporting box lifting mechanism, the turnover shaft driving mechanism is arranged on the front side or the rear side of the gutter channel, and the turnover box supporting and releasing mechanism is arranged between the front side and the rear side of the water flowing groove and connected with the turnover shaft driving mechanism.The device is advantaged in that the requirement that the turnover box rises or falls at the position, corresponding to any workstation on one side of the assembly line groove, of the turnover box according to needs and is transferred to the lower workstation is met, and adaptability to flexible changes of small-batch orders and even special customization is embodied.