Abstract: The leakage water of metro station is a very troublesome problem, so the quality of concrete pouring is the construction node that all sides of the project pay close attention to. By combining a new type of induced joint and taking Qingpu station engineering of Shanghai metro line 17 as the background, this paper intended to design and manufacture one special formwork support as a part of waterproof system, which could make the structure of floor and side wall separately constructed. The formwork bracket system suitable for the new type of induced joint setting-disc-buckled steel pipe bracket and side wall was developed. The triangular steel frame and composite large steel formwork were simulated and analyzed by three-dimensional finite element method, and a feasible scheme suitable for the construction of new composite induced joints was put forward.