To load a mountainous baggage apart in order in the baggage compartment in the rear of a vehicle.

This rack structure comprises right and left side frames 2 suspended on the right and left side body Bs sides of the baggage compartment R of a vehicle and a rack frame 25 removably stretched between the right and left side frames. The right and left side frames 2 are formed into a roughly rectangular shape comprising upper and lower frames and front and rear vertical frames, intermediate frames are mounted on the front and rear vertical frames at predetermined corresponding intervals, the rack frame is disposed between the intermediate frames or lower frames in such a way as to be capable of being selectively latched into place, and the upper-frame sides of the right and left side frames are rotatably mounted on the top of a side body via a mounting bracket 8, in such a way that they can be stored along the ceiling T side.