Diagnostic analysis of small business management system has been presented. Problems, shortcomings ("bottle necks"), reasons of their occurrence, and ways to eliminate violations and deviations aimed at its effective functioning have been highlighted. The method of analyzing the macro environment profile was used to reveal the relative importance of its specific factors for a small enterprise. The degree of competition in the industry, where a small enterprise operates, its competitive position, the response to current and expected success factors in the industry environment have been explored. SNW - analysis of factors of the internal environment of a small enterprise in functional areas (personnel, marketing, production, finance and management, including organizational culture assessment) is presented. Particular attention is paid to the study of the parameters of socio-demographic and production components of labor potential of a small enterprise on the basis of a questionnaire. The weaknesses of its activities are shown (personnel policy and financial management, as well as general management). The information on "critical points" of management system was generalized, a tendency to reduce its quantitative and qualitative characteristics was revealed. The problems in management of small enterprise (economic, personnel, organizational) have been structured and ways to address them have been proposed.