Cast-in-place structure formwork system for secondary structure engineering

The invention discloses a cast-in-place structure formwork supporting system for secondary structure engineering. The cast-in-place structure formwork supporting system comprises three-side thin-wall hollow building blocks and a mold set used for manufacturing the three-side thin-wall hollow building blocks. The three-edge thin-wall hollow building block comprises a thick edge, opposite thin side edges are arranged at the two ends of the thick edge, and a hollow building block body with an opening in one side is formed between the thick edge and the two thin side edges. When in use, the three-side thin-wall hollow building block is built at a required position of an infilled wall, and an opening of the hollow building block main body is opposite to an existing wall body, so that a filling cavity is formed between the hollow building block main bodies. The specific three-side thin-wall hollow building block is manufactured through a specific mold set, the openings of the hollow building ...