复合地基最终沉降变形对于建筑设计、安全及正常使用至关重要 ,而通过长期沉降观测获得复合地基最终沉降变形需要消耗较多的人力和物力。本文运用灰色理论对复合地基最终沉降变形进行了预测 ,预测过程建立在数学基础之上 ,而且预测结果的精度能够满足工程需要 The final subsidence and deformation of the composite foundation is very important for the design, safety and normal use of the building. The final subsidence and deformation of the composite foundation through long-term subsidence observation require more manpower and material resources. In this paper, the gray theory is used to predict the final settlement and deformation of the composite foundation. The prediction process is based on mathematics, and the accuracy of the prediction results can meet the needs of the project