Abstract:The anti-floating problem of underground structure in the high water level area is calculated by the finite element software. Through the adjustment of sectional dimension of U-shaped groove under the high water level and the other anti-floating measures, the anti-floating measures for U-shaped groove under the high water level are optimized and designed. The anti-floating measures with relatively high economic efficiency under the different water levels are given. The method can be used as a reference for similar projects.