Moisture-proof and water-proof facility for civil construction of foundation pit

The utility model relates to the technical field of foundation pit protection, in particular to a foundation pit civil construction moistureproof facility, which has the technical scheme that the foundation pit civil construction moistureproof facility comprises a foundation pit and a moistureproof mechanism, the moistureproof mechanism is arranged in the foundation pit, and the moistureproof mechanism comprises a bottom waterproof component, a side waterproof component, a connecting component and a positioning component, the bottom waterproof assembly is arranged at the bottom of the inner wall of a foundation pit, the side waterproof assembly is arranged on the side of the inner wall of the foundation pit, the bottom waterproof assembly and the side waterproof assembly are connected through the connecting assembly, and the positioning assembly is arranged on the bottom waterproof assembly and the side waterproof assembly. The device has the advantages that seawater can be effectively prevented from permeati