A new type of wind turbine tower,Variable CrossSection Frame wind turbine, was proposed. With Fortran language and binarycoding method of Genetic Algorithm (GA), calculation algorithm of varying crosssection frame wind turbine was developed base on practical project. Upon the optimization algorithm, sectionsize and shape optimization of wind tower was carried out. By the finite element software, with userdefined beam element parameters, an optimization model was proposed for traditional singlepipe tower. It was found that compared with singlepipe tower, frame wind turbine has quite a lot advantages such as relative higher first natural frequency and stiffness, relative lower foundation quantities, easy to be carried and constructed and so on.