Agricultural sector as an economic activity is very important, because that is an original source of income of most countries. Also this sector has a considerable potential in development. Agricultural activities depends on requirements such as: Procurement of farm power and machineries .In new systems of agriculture must be more attention to relation of nature, man and machine and also preferred to put emphasis on agricultural mechanization. In this case agricultural mechanized services companies can in the figure of rural cooperatives and governmental sectors , help to get of agricultural mechanization aims. In order to evaluation of companies productivity and efficiency in Khorasan province a study was performed over 73 agricultural mechanized services companies and 222 farmers. After specifying the companies , the required data were obtained by questionnaire , interviewing with the farmers and members of companies and related managers. Then , for evaluation of the effects different variables on success and un success companies. Data was analyzed by using regression analysis. The obtained results showed that: 1) Most problems of the companies were , lack of capital, some special kinds of farm machineries , combine harvester, skillful technician and driver of tractor and farm machineries, also spare parts, size and condition of lands, mechanization policies . 2) All farmers use than services of the companies and farmers who were members of the companies were in preference.3) Rate of cultivation and delivery of production was base of services rate to farmers. 4) Membership of new farmers in the companies was increased. 5) About 30% of machineries were junk that only about 12% of them were replaced. 6) Number of farm machineries were insufficient and kinds of them were sufficient 7) Employment of specialists of farm machineries in the companies was less than 1%. 8) Maximum and minimum of relation of the companies was with organizations and research centers, respectively.9) Productivity of the companies was about medium and low. Finally, some suggestion are made to solve problems such as : Giving farm machineries to the companies based of facilities of payments, creation of sufficient motivation for investment for those who are ready to invest, imports or production of small farm machineries by manufacturers of domestic and promotion and distribution of them by the companies, employment of specialists of farm machineries and establishment of sectors of research and development and promotion and also , encouragement of farmers to membership in the companies, establishment of regional centers in order to training of proficiencies of tractors and farm machineries driving, maintenance and adjustment training of farm machineries and also, training of cooperating and companies management principles , obviate of difficulty for new companies by facilities payments and equipping them with requirement machineries and doing of commitments of other organizations against these companies.

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