The development of urban underground space is playing the more and more important role. A new type urban architecture system taking space
ground surface and underground as 3D integralization is being produced gradually. The treatment of foundation between underground works and surface buildings in this system is a very troublesome problem. In combination with the specific engineering project
an introduction to a new compound arching technology for effectively tackling this type of problems is made. This technology is of generalized value to the urban construction in the future.