Abstract: This study shows a COA algorithm approach in order to find Pareto solutions for multi-objective selection of advanced machining scheme. For multi-purpose evaluation in this approach, the proposed method for focusing and determining the weight value of the evaluation indices enables a Analytical Hierarchical Process (AHP) to enable the engineer to determine a variety of requirements. There are three reverse objectives: cost, quality and operation time, which are built at the same time. A pilot program has been created and its results analyzed. This optimization of the results shows that the algorithm is valid.