The general goal of this research is to study the performance of board members and principals of rural production co-operatives of Khuzestan province. Documental and field methods are used to gather the required information. After preparing complete works and theoritcal framework, management by objective (MBO) method is used to evaluate the performance of managers. By using multi-stage sampling, counties of plain and mountainous areas of the province have been selected for the research. Generally 285 questionnaires were filled out, and 12 cooperatives were evaluated. To gather information, four types of questionnaires were designed accordingly. The first one was about common members' opinion. The second one had been designed for studying the characteristic of managers. To know the opinion of cooperatives experts, and general specifications of cooperatives were asked in the third and four questionnaires, respectively. For data processing the following softwares were used, 16, Excel, Expert Choice. Statistical tests (factor analysis and Cronbakh's Alpha Coefficient) showed that concepts applied in the research had high validity and reliability. In general, Results of the research showed that the performance of cooperatives was weak. The research hypotheses test also showed, "the higher education and experience of managers caused to the cooperative success". It showed that "the higher recognition of members from cooperation principles, and the higher education and knowledgement cause to the success, too". Results of this research shows that, "the performance of managers is weak, too". Cooperatives were not successful in achieving their objectives and satisfy members expectations. Other results of this research were "the rate of member sharing instruction", "managers educations" and "managers specialty" is very weak and "participation in cooperative affaire is normal". The result of path analysis showed that the performance of managers and human force influence on cooperative success. Inside organizational also influenced on cooperative success. The analytical hierarchy process (AHP) also shows that convince cooperative experts know "constructing necessary infrastructure", using proper individuals" and "learning members and managers" as the most important factors for the rural production cooperatives success in Khuzestan. Key words: Evaluation of performance, Success, Cooperative, Rural production cooperative, Khuzestan province.