The invention relates to the technical field of automobile cargo tanks, in particular to an all-
terrain vehicle rear cargo tank structure which comprises a cargo tank floor combination, a cargo tank front door, a goods shelf, a right side plate, an inhaul cable, a
tail lamp protection cover, a
tail lamp mounting plate, a cargo tank rear door and a left side plate. The right side plate, the
tail lamp protection cover, the tail lamp mounting plate and the left side plate are assembled on the cargo tank floor combination through screws, the inhaul cable is fixed on the cargo tank floor combination and the cargo tank rear door through step bolts, a plurality of
welding screw tubes are designed on the left side and the right side of the rear cargo tank, two oil drum supports can be mounted on the left side, and an oil drum can be fixed on each oil drum support. A
spare tire support can be installed on the right side, a wheel can be fixed to the
spare tire support, a plurality of screw holes are designed in the bottom of the rear container, a plurality of devices or two stretchers can be installed, a goods bucket on the lower portion of the rear container can load various goods, and a goods shelf is designed above the rear container and can contain goods such as a backpack.