The Longyao road cross-river tunnel will undercross the wharf piles foundation of the Yaohua glass factory, so some of the existing piles should be pulled out of the soil before the shield tunneling. After comparison of all pile pulling methods, considering the characteristics of this project, the FCEC method was selected. The basic principle, advantages, and construction flow are introduced, as well as the background of the project. During the process of pile pulling, the maximal settlement of the flood-control wall was 6 mm and the differential settlement was 5 mm, which met the security requirements. This construction practice provides reference to similar projects.