Based on characteristic fatty acid, equivalent carbon number of triglycerides (ECN) and ratios of palmitic acid to stearic acid, oleic acid to stearic acid and linoleic acid to oleic acid, the model of oil -tea camellia seed oil adulterated with palm oil, sunflower seed oil, rice bran oil, soybean oil, pea- nut oil and cottonseed oil was established by principal component analysis (PCA) and Fisher distinguish analysis method, respectively. The results showed that more than 20% of adulteration amount and kind of adulteration oil could be dis...