Abstract: Taking Hongxiangmeiyu foundation treatment project in Xiahuayuan District of Zhangjiakou as an example, combined with the technical principle of CFG pile composite foundation, the characteristics of non-self-weight collapsible loess bearing load before reaching the initial collapsible pressure are fully utilized. By adjusting the load distribution between pile and soil, the load of non-self-weight collapsible loess should not exceed its initial collapsible pressure, which can be controlled under the condition of collapsibility. The bearing capacity and settlement control of foundation can meet the design requirements of buildings, thus greatly reducing the cost of foundation treatment, and providing a new treatment of non-self-weight collapsible loess foundation.