A folding cargo container is disclosed. The folding cargo container has a left frame, a right frame, a rear frame, a bottom frame, a cross bar, a first connection member, a second connection member, and a third connection member, the left frame is foldably connected to the rear frame via the first connection member, the right frame is foldably connected to the rear frame via the second connection member, the left end of the bottom frame is foldably connected to the left frame via the third connection member. Locking slots can lock the bottom frame and right frame. The described cargo container has a simple structure and low production cost, and all frame parts thereof may be folded together, which takes up less space when not in use.