Foundation pit and pitched slope projects are greatly vital since safety issues are deeply concerned. The foundation pit of the Jincuiyuan in Cuizhu Bei of Shenzhen was 18.1m deep and the surrounding area and building remained unaffected. Besides, problems of sea water proof and revetment stableness was solved in International Administration Office Building in the Shenzhen Yantian Harbor project,at present the foundation pit of OCT Happy Seacoast is the biggest foundation pit supporting project in Shenzhen,the foundation pit of Zhongguan Times Square is adjacent to a subway station,and its surrounding settlement is less than 3mm.