Foundation pit drainage device for building engineering construction

The utility model relates to the technical field of foundation pit drainage devices for constructional engineering construction, and discloses a foundation pit drainage device for constructional engineering construction, which comprises a drainage device fixing plate, and the top of the drainage device fixing plate is fixedly connected with an umbrella support sleeve to facilitate operation and placement of an umbrella support. An umbrella support is movably sleeved with an umbrella support sleeve, the top of the umbrella support is fixedly connected with an umbrella to prevent equipment from leaking water in rainy days, and cart handle connecting columns are fixedly connected to the side faces of the two sides of a drainage device fixing plate to facilitate operation and adjustment to the angle suitable for self control. The outer part of the cart handle connecting column is fixedly connected with a cart handle; according to the utility model, through the arrangement of the umbrella, the situation that the u