Along with the increasing world population, food supply required is faced with serious limitations. This issue causes that farmers use more pesticide for increase their products and against plant pests. The use of pesticides and chemical fertilizers faced human life with more risk and affect their health. Therefore, this paper attempts to estimate willingness to accept of organic Cucumber cultivation by farmers in Alborz province and to examine factors affecting it. The statistic population consisted of 78 cucumber producers in Alborz province and data were collected through a questionnaire. The results showed that 64 percent of farmers have tendency to give more than 10000 riyals per kilogram for organic cucumber. The results showed that job, cultivation, sale price, yield have positive relationship and income has negative and significant relationship with farmers’ tendency to produce organic cucumbers. Furthermore, results showed that there was lack of farmers’ knowledge about organic's market and regulations. Regarding to results, it is recommended to hold meetings and seminar between farmers in agricultural service centers of the provinces by Agricultural Jihad, to pay credits to organic producers and movement of insurance in order to decrease risk and increase production.