The invention provides an automatic stacking transport line for edible mushroom boxes. The automatic stacking transport line comprises an adjustable transport rack and a transport device fixed on theadjustable transport rack, the transport rack comprises at least one set of bottom struts with the number being four and arranged in a rectangular shape, adjustable stabilizer blades, middle adjustment rod groups and top struts, each middle adjustment rod group comprises at least one middle adjustment rod arranged in a liner connection manner, the centers of the bottom struts, the middle adjustment rods and the top struts are each provided with a fixed perforation hole, a fixed strut penetrates through each fixed perforation hole, one end of each fixed strut abuts against the corresponding adjustable stabilizer blade, the other end of each fixed strut is arranged in the fixed perforation hole in the corresponding top strut, and the transport device comprises supporting cross frames fixedlyerected on the tops of the top struts, a plurality of parallel conveying rollers connected between the two supporting cross frames, a driving device for driving the conveying rollers to move and a plurality of limiting frame groups fixed on the supporting cross frames. The automatic stacking transport line is simple in structure, has the good adjustability, and is more accurate in positioning.