Abstract: Eight 8-year-old lemon varieties, including Lectra, Allen, Fermi Endurance, Fino, Kutodiken, Monnaguello, Werner and Villafranca in high yield and good quality lemon demonstration resources in Anyue county at Sichuan province, were used as materials. Lectra which was the main lemon variety was set as the check. Gas chromatography-mass spectrometry (GC-MS) method was built to determine fruit sugar and acid compositions. The results showed that a total of 34 metabolic components were identified from 8 lemon varieties, including 23 sugars and derivatives, 11 organic acids and amino acids. There were differences in the types and relative contents of the compounds in the fruit metabolic components of 8 lemon varieties, and the differences were 0.05%~14.60%.The average fruit weight and fruit shape index of 8 lemon varieties were 125 g and 1.0 respectively, which all reached the standard of superior fruit by determinating the quality. The varieties with high soluble solids and high acid content were Fino, Lectra, Werner and Villafranca. The TSS contents of Fino and Lectra (7.80% and 7.71%, respectively) were significantly higher than that of the other 6 varieties. The total acid content of Fino was significantly higher than that of Lectra and 6 other varieties, up to 6.89%.