Research conclusions: Through optimizing the matching ratio of concrete and studying the engineering testing，the structural style of the concrete column was adopted． In this way，the position between the bottom segment of the steel tower and the concrete surface could be well adjusted and the rather big space could be provided for tamping the concrete． Also the grouting was conducted to the top part for ensuring the flatness and compactness of the mass steel －concrete coincided section． By optimizing and selecting the reasonable hoisting process，the precise positioning between the cross girder and T1，T2 was ensured while by using 5 200 t/m tower crane，the construction concept of the " segment being prefabricated in plant and assembled in site" was realized and the the construction period was shortened by 1 /3．