The invention discloses a box culvert carrying device for incremental launching construction. The carrying device comprises an axle air bag system, a plate system, a detection system, a soil cutting system and an anchoring system. The axle air bag system is a lower rolling part of the carrying device, and the structure of the axle air bag system is that the periphery of a steel rolling wheel (2) is wrapped with an air bag (4) so as to be beneficial for marching in the soil and separation of a box culvert and the carrying device in the later period. The plate system is a panel of the carrying device, and formed by side-by-side assembly of a plurality of unit bottom plates (1) located under the box culvert in site. The soil cutting system is a steel blade corner mounted at the front end of the box culvert and an arc-shaped soil cutting device (12) mounted on the plate system. The anchoring system is connection device anchoring bolts (13) of a rolling shaft (3) and the unit bottom plates(1) and a connection plug bolt (9) between every two unit bottom plates (1). The box culvert carrying device can further increase the construction speed, shorten the construction period, lower the construction cost, and a new technical selection with excellent performance can be brought about for incremental launching construction of the box culvert.