The purpose of this study is to select criteria of third party logistics company as the most contribution to the profit of customer company. Based upon literature review and the factor analysis, a total of six factors(Trust, Company reputation, Service capability, Stability, Speciality, Cost saving) when selecting third-party logistics provider, are employed in this research. We selected five experienced experts in business logistics for evaluating the relative weight between these criteria by AHP. The results indicated that the relative importance of service capability was the highest at an analysis conducted on experts.