The paper introduces a foundation pit project in Beijing, which consists of a variety of architectural forms, according to the surrounding environment and geotechnical conditions, as well as groundwater conditions, the foundation pit support scheme contains 4 different supporting methods for the divided 5 regions, soil nailed wall + pre-stressed anchor bolt retaining pile structure is adopted in 2 regions and pre-stressed anchor bolt retaining pile, retaining wall + pre-stressed anchor bolt retaining pile and anchor bolt composite soil nailing wall are applied in 3 other regions separately. This paper also introduces the designs of foundation pit dewatering and anti-floating, as well as the technical scheme of foundation pit support construction.