The application discloses an all-
terrain vehicle, which comprises a frame, a roof, a walking
system and a power
assembly. The frame comprises a connected upper frame and lower frame, the upper frame comprises a front upright column, a rear upright column and a top pole structure above the front upright column and the rear upright column, the roof is at least partially installed on the top pole structure, the walking
system is at least partially located below the lower frame, and the power
assembly is supported by the lower frame and drivingly connected with the walking
system. The frame further comprises a
tail frame located behind the rear upright column, the roof comprises a front roof and a rear roof, the front roof is installed on the top pole structure, and the rear roof is installed on the
tail frame; when the rear roof is in an installed state, the
tail frame is connected with the rear upright column, the rear roof is cooperatively sealed with the front roof to seal the all-
terrain vehicle, and when the rear roof is in a disassembled state, the tail frame is separated from the rear upright column. Through the above arrangement, the sealing property of the roof can be improved, and the disassembly and
assembly convenience of the roof can be improved.