The invention discloses a hollow profile connecting rack. The hollow profile connecting rack solves the problems that an existing connecting rack is inconvenient to install, and selected profile wall bodies are thick, so that the preparation cost is high. According to the technical measure, the hollow profile connecting rack comprises two hollow rod bodies connected together. A connecting part is arranged at the position where the two rod bodies are connected. The hollow profile connecting rack is characterized in that the cross sections of the rod bodies are rectangular, the connecting part is in an H shape and is provided with two parallel side walls, and a partition connected with the two side walls into a whole, therefore, openings are formed in the positions, on the two opposite sides of the partition, in the connecting part, the two rod bodies are inserted into the two openings of the connecting part, and the side walls and wall bodies of the rod bodies are riveted together through rivets.