During the construction of underground diaphragm wall, its steel reinforced framework is mainly steel box and steel cage. At present, the problem of hoisting the extra-long and extra-heavy steel box / reinforcement cage brought by ultra-deep underground diaphragm wall has become more and more prominent. Based on a project of steel box / reinforcement cage joint test section, the safety management of steel box/reinforcement cage hoisting construction of underground diaphragm wall is discussed. Three parts of equipment selection before hoisting, hoisting point control and safety control during hoisting are analyzed respectively. And some construction suggestions applicable to similar projects are given with the construction experience of relevant projects in order to further promote the development of steel box / reinforcement cage hoisting construction safety management in the continuous development of underground space construction.