In order to improve the efficiency and accuracy of foundation calculation of the port engineering,we develop the foundation calculation CAD system of the port engineering combining with the advantages of domestic and international popular geotechnical analysis and calculation software and based on partial achievements of the harbor investigation and design application system(HIDAS).The system incorporates the engineering experience,the computing experience and operation habits of front-line designers,and integrates the drawing function of the calculation section of foundation.In case of excavation and gradation loading,we can calculate the settlement,solidification,slope stability,foundation stress and calculation under consideration of the effect of the composite foundation on the slope stability,so as to lay a foundation for the slope stability calculation by the effective stress method considering the consolidation static pore pressure and seepage flow pore pressure.It is of great theoretical and practical significance for realizing the international integration as soon as possible.