The continuous cut-cast pile is adopted for the foundation pit of Shipaiqiao Subway Station in Guangzhou city. The optimal calculation has been made for the sparse piles with 2.0 m distance between the neighboring piles of ? 1 200 mm while the foundation safety is guaranteed. The monitoring design is brought out in detail in order to guarantee foundation safety on account of complex environment around the foundation; the comprehensive data are gotten and used for construction.