Cooperative organizations play an important role in improves the quality of work, especially in agricultural sector. The main purpose of this research was to determining the effective factors on the effectiveness of agricultural mechanization cooperatives (EAMC) in the Mahabad township that located in west Azerbaijan province. The research population included farmers that member agricultural cooperatives in Mahabad township in the West Azerbaijan Provinces (N = 18758). By using Cochrane formula sample size was determined as 215 people. The data collection tool was the questionnaire. Reliability coefficient of the questionnaire was obtained by Cronbach's alpha that was 0.769. Results showed that factors influencing the effectiveness on agricultural mechanization cooperatives (EAMC) include management, economic, social, policy-making and educational factors. Also finding of confirmatory factor analysis by lisrel shows that the highest value of R2 = 0.72 was related to the policy making factor and the lowest value of R2 = 0.42 was related to economical factor.