Abstract: The paper aims to analyze the contents of aroma components of Pu-erh raw materials tea in Lincang, Yunnan by different analysis methods, and compare the measured aroma components, to provide a theoretical basis for the analysis of the aroma components of Pu-erh raw materials tea. The authors analyzed the contents of aroma components of 16 Pu-erh raw materials tea samples from different regions of Lincang by electronic nose and GC-MS. The results of GC-MS showed that: the categories of alcohols and alkenes were higher in aroma compositions; the contents of alcohols compounds were the highest, then were the heterocyclic compounds; however, the categories of nitrogenoxide, aromatic hydrocarbons, phenols and acids were the least; the contents of nitrogenoxide, aromatic hydrocarbons, phenols and acids were lower. The results of electronic nose showed that: the tea samples of LC-11 and LC-15 had significant differences compared with other tea samples; the results of GC- MS showed that the LC- 11, LC- 15 and LC- 10 had significant differences compared with other tea samples; the aroma components in LC- 11 were the most, 53 kinds of aroma components were detected (86.86%), and the contents of heterocyclic were higher than that of other samples; while the aromatic components detected in LC-15 were the least (59.05%), and the contents of alcohols were the least; the results of cluster analysis showed that: LC-10 and LC-15 were significantly different from other tea samples. The study identified that: the combination of electronic nose and GC-MS method could be used to analyze and distinguish the aromatic components of volatile aromatic substances and their differences in the Pu-erh raw materials tea effectively.