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 mechineries. 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 ectors, 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 obtinad by questionnire,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.Theobtinated results showed that: 1) Most problem of the companies were.lack of capital,some special kinds of farm machinery,combine harvester,skillful technician and driver of tractor and farm machinery, 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.

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