In this paper,deficiencies of traditional deformation monitoring techniques such as leveling and GPS as well as conventional D-InSAR technique are analyzed for their application to deformation detection of mining collapse areas.Detailed introductions are also made to the principle,advantages and disadvantages of PS-InSAR technique and its current applications.Through an analysis of deformation characteristics of mining collapse areas in Beijing and the advantages and disadvantages of PS-InSAR technique,it is concluded that the PS-InSAR technique is applicable in deformation monitoring in the Mencheng Town area.