A database center on finite element model is set up by classifying the nodes, elements, constraints, loads and some other information.Then this paper analyzed the interface formats of SATWE, ETABS and ANSYS which commonly are widely used in the fields of structural design for building by means of the coding technology of.NET(C#) and database, realized the input and output of the finite element data and read their finite element data into database center of finite element model.Finally the database could generate the interface model files as CAE codes need by operating the center database.This paper has mainly achieved that inputting the finite element model data into database and transferring the finite element models of SATWE into ETABS and ANSYS.The accuracy of the transformation has been verified by one complex example of core tube structure which is a real high-rise building.The first three frequencies and the total mass are analyzed and the results from different codes are in good agreement.