Civil construction pre-embedded equipment

The utility model belongs to the technical field of civil engineering construction, and particularly relates to civil engineering construction pre-embedded equipment which comprises a base, a connecting piece is fixedly connected to the top face of the base, and a movable groove is formed in the surface of the base. A positioning structure is installed on the inner side of the base and comprises a lower sliding insertion plate, the lower sliding insertion plate is installed on the inner side of the movable groove in a sliding mode, an upper movable insertion plate is installed on the upper side of the lower sliding insertion plate in a sliding mode, and meshing teeth are integrally formed on the side wall of the lower sliding insertion plate and the side wall of the upper movable insertion plate; a sliding sleeve is movably installed on the top face of the base through a bearing, a connecting column is movably installed on the inner side of the sliding sleeve, a sliding groove is formed in the surface of the