Jasmine rice was produced from varieties Khao Dowk Mali 105 (KDML 105) .It was famous in the world market and there is a high market demand. Therefore, merchant brought Khao Dowk Mali 105 (KDML 105) mixed with other varieties of rice that have similar the physicochemical properties but there are cheaper price and can be make it for a better price. Adulteration of Jasmine rice with other varieties is a problem encountering Thailand rice export, the quality of rice exports drop. Due to the quality of rice decreased. This causes confusion to consumers, both in quality and price. Make it is difficulty Jasmine rice market expansion in the future.