Abstract: The cross section of anti-slide pile mainly has two forms, rectangle and circle respectively. These two forms play important roles in slide resistance, while they have their own strengths and weaknesses. In view of bringing out the utmost strengths of them and choosing the optimal type of cross section economically and reasonably, this article, through multi-attribute decision making, takes the construction site requirements, construction difficulty, construction period, manpower and machinery, engineering cost and construction risk into consideration. Then it also makes use of the weight of the decision attributes to implement the optimization of anti-slide pile's cross section in construction. It demonstrates that, the optimization model, based on the AOWEA operator, can find out the optimization result S1 S2 finally. With the requirement of management, reasonable construction technology and safety of landslide control and under the circumstance of the good construction site conditions and the urgent time requirement, the construction scheme of circular cross section of anti-slide pile is much better than that of rectangle. Eventually illustrating by the specific construction projects, this optimization can serve as the reference and guidance for construction application in anti-slide cross section.