Rice is highly nutrient grains and as high most food consumed two - thirds world population is considered to be due to its specific characteristics, as a fill food consumption need of human food. The purpose of this study is determination of the optimum combination of fertilizers used in cultivation of this product, including Nitrogen fertilizer, Ammonium phosphate, Di Ammonium phosphate, Triple super phosphate, Potassium chloride and Potassium sulfate according to the nutrients (NPK) in the crop year 2008 - 2009. The study uses Euclidean distance function to measure distances of all possible solutions from the ideal solution. The results showed that the total cost equal to 28600, 31800 and 26400 Rials, the optimum combination of fertilizer related to priority levels of (P1, P2, P3), (P1, P2, P3) and (P1, P3, P2) with Euclidean distances, 142.77, 147.53 and 131.7 respectively. Also, results showed that the highest amount in optimum combination is related to Mono Ammonium phosphate fertilizer and the highest and lowest amount of nutrients is related to phosphor and Potassium, respectively

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