In order to investigate the soft ground construction technology, this article combines the characteristics of soft ground in a rainy and humid area in central Sichuan with a highway in Sichuan as an example. Two soft ground construction technologies are studied, single CFG pile soft ground treatment and CFG pile + geotextile joint punching and crushing, and a settlement test on the results of the two technologies is carried out. The results show that: 1) During the initial phase of the CFG pile treatment of the soft foundation section, the settlement rate of the soft foundation is accelerated. However, with the passage of time, the soil body gradually consolidates, and the settlement rate begins to slow down until it reaches a stable state; 2) The overall settlement produced after the completion of the project is less than 25 cm. The maximum uneven settlement is less than 4 cm; 3) The overall performance of the roadbed is more stable after construction, with no cracking or deformation. This meets the design and construction requirements standards; 4) In soft ground treatment, the CFG pile combined with geotextile and punching and rolling technology demonstrates superior performance to the CFG pile treatment method in terms of settlement control, load distribution, and roadbed stability.