Fuel tank assembly device and vehicle

The invention relates to the technical field of chassis parts, in particular to a fuel tank assembly device and a vehicle. The fuel tank assembly device comprises a fuel tank body, a pedal ladder pedal and a side protection assembly, wherein one side of the fuel tank body is partially sunken inwards to form a containing cavity; the pedaling ladder pedal is arranged in the accommodating cavity; the side protection assembly comprises a protection plate, the protection plate is arranged on the side, provided with the containing cavity, of the fuel tank body in a covering mode, and a through groove is formed in the position, corresponding to the pedaling ladder pedal, of the protection plate. Through the pedaling ladder pedal embedded in the fuel tank body and the through groove formed in the corresponding position of the protection plate, the damage to the pedaling ladder pedal can be reduced as much as possible, the whole device can be compact in structure, and the space utilization rate is increased. 本发明涉及车底盘零