Based on the CFG pile composite foundation project of a road-bridge transition section in Fuzhou, the longitudinal section model was established using MIDAS GTS/NX, the natural foundation and the CFG pile composite foundation model were established respectively, and the static consolidation analysis was carried out. The settlement value at the same position was extracted and compared with the simulated settlement value of the cross-section and the on-site settlement monitoring data. The results showed that the settlement of the CFG pile composite foundation was reduced by 13.6cm compared with the natural foundation. The simulated settlement value and the on-site monitoring result are basically the same, and the settlement change trend is also similar, indicating the effectiveness of the CFG pile composite foundation to strengthen the soft foundation and the reliability of the finite element simulation. The research results can provide a certain theoretical reference and reference for the reinforcement of soft soil foundation.