Take the deep foundation pit project of Jinan Gold International Plaza as an example, in view of the characteristics of soil rock combination formation, the support design with suspended piles and anchor cables in the layout of two piles plus one anchor was adopted. The design of the foundation pit, test of anchor cables and monitoring of the foundation pit are introduced. The acceptance test of anchor cables was carried out on site, and the test results meet the design requirements. The monitoring results show that the deformation of the supporting structure of the foundation pit and the settlement of the surrounding buildings are all in a safe state, which is far less than the alarm value, indicating that the application of the suspended piles and anchor support in the deep foundation pit in the soil rock composite stratum is very good with less costs and short construction period. The relevant design methods, experiments and monitoring results can provide reference for similar projects.