Abstract: Effective control of deformation is an important guarantee for the urban levee road combination works to play the dual role of flood control and transportation. Based on the typical section of the levee road combination project along the Yangtze River in Nanjing, a plane strain finite element numerical model is established, and the deformation distribution and development laws of four conditions, namely, natural surcharge, step-reinforcement, deep cement mixing (DCM) and pervious concrete pile (PCP), are analyzed in depth. The research results show that the overall deformation law of the step-reinforcement condition is basically consistent with the natural surcharge condition, and the settlement and horizontal displacement of the new and old levees and foundation can not be effectively reduced without soft foundation treatment. Both DCM and PCP conditions can effectively control the settlement, uplift and horizontal displacement of the upper embankment and the lower foundation, and the post construction settlement is less than 100 mm. The PCP composite foundation can reduce the post construction settlement of the pavement to 43 mm under the condition of low replacement rate of 3.6%, and shorten the time to reach 99% consolidation degree from 1 year to 155 d, and the deformation control ability of PCP condition is better than that under DCM condition. PCP composite foundation technology has a good application prospect in levee road combination project in soft foundation area with a high deformation control standard and a short construction period.