The work is devoted to the consideration of the approach to effectiveness increase in socialeconomic system operation through the fuzzy model development for the supplier choice of commoditymaterial stocks in logistic companies. The problem urgency is conditioned on the system approach absence in the overwhelming majority of companies to the formation of procurement logistics strategy which makes difficulties in the process rapid management and charges efficient control. The theory of fuzzy sets is a methodological ba-sis of the work. The model developed has a practical value for the leadership of logistics companies.