Tray box

The invention discloses a tray box. A tray box lock is installed on the tray box. The tray box lock comprises a lock support, a lock rod, a handle and a hook head, wherein the lock support is provided with a containing space opened towards one side of the lock support, the lock rod is movably connected with the lock support, a part of the lock rod is contained in the containing space, the two ends of the lock rod are located outside the containing space, the handle is at least fixedly connected with the portion, inside the containing space, of the lock rod, the hook head is arranged to protrude from one end of the lock rod to the direction opposite to the opening direction of the containing space and is inclined upwards relative to the horizontal plane, and a handle containing space for containing the handle is formed between the tray box lock and an upper edge beam. According to the tray box, the handle can smoothly rotate relative to a half folding door and does not collide with the lower box wall anymore; meanwhile, after the half folding door and the adjacent box walls are locked by the tray box lock, no gap exists above the hook head, and the problem that the box wall where the half folding door is located moves upwards is effectively solved.