Prestress pressurizer applied to foundation pit

The utility model discloses a prestress pressurizer applied to a foundation pit, and aims to provide a prestress pressurizer which is convenient to install, good in universality, capable of providing prestress for various supporting components of the foundation pit and capable of effectively solving the problems that in the prior art, in the pressurizing process, a supporting component of a prestress pressurizing assembly is prone to lateral displacement and deflection, and the supporting component is prone to deformation. The utility model discloses a prestress pressurizer applied to a foundation pit. The device comprises a drawer type steel jacket box and an oil jack, the drawer type steel jacket box comprises a jacket box body, a guide groove formed in the jacket box body and a sliding jacket box sliding along the guide groove, the oil jack is arranged in the jacket box body, and the telescopic direction of the oil jack is parallel to the sliding direction of the sliding jacket box. The oil jack is used fo