Abstract:The construction of underground diaphragm wall is mainly based on large equipment and supplemented by manual labor. The construction process and procedures of underground diaphragm wall are relatively complex, involving many types and large sizes of equipment. Therefore, the construction safety risks are inevitable during the construction process, especially in the hoisting process of underground diaphragm wall reinforcement cage with the high safety risks. The safety hazards in construction are classified from the perspective of equipment, and the causes of safety accidents are analyzed. And the corresponding solutions are given in a targeted manner, which provides the suggestions for the safety management in the construction of underground diaphragm wall.