The fatty acids were evaluated in 123 genotypes with bacterial wilt resistance and compared with the corresponding characters in entire collection of 6006 accessions.The results revealed that the average oleic acid content in resistant genotypes was 51.78% which was significantly higher than that in entire collection(45.64%) and average linoleic acid content was 28.88% which was significantly lower than that in entire collection(34.36%). There were 23 accessions with high concent of oleic acid(over 61%),taking 18.7% of the number of resistant genotypes,which was much higher than those in entire collection(2.65%).The diversity in oleic acid,linoleic acid and palmitic acid contents in genotypes with bacterial wilt resistance was much richer than that in entire collections based on the analysis of standard deviation,variation coefficient and genetic diversity index.