A container deck 20 of a trailer 10 is provided with a central elevating floor 40, a rear elevating floor 60 and a mounting floor 50 consisting of a front mounting floor 50A and a rear mounting floor 50B in the vehicle front-rear direction, the central elevating floor 40 is at intermediate portion of the vehicle body and capable of loading and unloading the air container 14 from the left or right side of the trailer vehicle body, the rear elevating floor 60 is at the rear end of the vehicle body and capable of loading and unloading the air container 14 from any of the left and right sides and rear end of the trailer vehicle body, the front mounting floor 50A and the rear mounting floor 50B is at the front and rear of the central elevating floor 40 respectively, the mounting floor 50 is provided with a roller conveyor 52 for movably placing the rectangular container 14 in a plan view front-rear direction and a roller conveyor 52 for movably placing, and a fixed side guide 80 for slidably engaged in the front-rear direction with the sliding part 14B of the bottom side of the container 14, the central elevating floor 40 is rotatable to the lateral position for loading and unloading in the vehicle width direction and to the front-rear position perpendicular to the lateral position, the rear elevating floor 60 includes a turntable 43 and a ball conveyor 64 capable of loading and unloading in the vehicle width direction and from the rear end, the center elevating floor 40 and the rear elevating floor 60 are capable to move up and down in a state in which a single container is placed between the upper limit height of the roller conveyor 52 and the loading and unloading height for delivering the container 14 to and from the container loading and unloading device 70 set as the lower limit height. This provides a trailer for aviation container transportation that can stop beside the aircraft, load and unload the air container from the vehicle body width direction via a dolly or the like, and transport it through a road outside the airport.