Abstract: In order to identify the scales of Elaphe schrenckii and determine the type and relative content of fatty acids in snake oil and monosaccharides in muscle, the snake oil and muscle polysaccharide were obtained by ultrasonic-assisted extraction, and the methyl esterified snake oil was analyzed by gas chromatography to obtain the types and relative contents of fatty acids; the polysaccharide was measured by gas chromatography after hydrolysis and derivatization to obtain the data of monosaccharide in muscle. The results showed that the ratio of unsaturated fatty acids to saturated fatty acids was 2.02, with a relatively high proportion of unsaturated fatty acids, and the relative content of fatty acids was oleic acid （34.200%）, palmitic acid （22.600%）, linoleic acid （22.200%） and stearic acid （5.280%） in descending order. The monosaccharides in muscle polysaccharides were 2 types of glucose and glucuronic acid, with glucose accounting for 69.13% and glucuronic acid for 14.32%.

Key words: Elaphe schrenckii, scales, fatty acids, monosaccharides