Abstract: The vacuum preloading tests on engineering site formation of Shanghai Disneyland park are systematically introduced. The test results of surface settlement, layered sedimentation and pore water pressure are summarized and analyzed. On such a basis, the influences on the surrounding environment of settlement deformation and lateral displacement in the vacuum preloading tests are obtained. The results show that in the soft-land area, the vacuum preloading can achieve good effect in large-area foundation treatment, and the engineering requirements are meeted.