The well screen grouting technology has solved the problems of anchoring which caused by miscellaneous fill, silt, clay, sandy soils and other soft soil foundations. It improves the overall stability of excavation support systerm. Abnormal deformation of foundation slope is a common phenomenon in the process of foundation construction. Rationality and feasibility of slope reinforcement program are particulary important. Taking the example of rescuing and strengthening the EF foundation section of Victoria square, this paper describes the application of well screen grouting technology in slope reinforcement program under specific environment and geological condition. It makes people have a better understanding of the technology.