The volatile compounds of the leaf ofCinnamomum cassiaPresl, which is the raw materials of thechixiangdaqu, was studied by using liquid-liquid extraction with gas chromatography-mass spectrometry (GC-MS). The total of 45 volatile compounds were identified and detected, including 25 aromatic compounds, 8 phenolic compounds, 6 terpenes, 2 acids，3 furans and 1 pyrans. Among these, the composition and concentrations of aromatic compounds were the most abundant substances in the leaf ofCinnamomum cassiaPresl. The results showed thattrans-cinnamaldehyde had the highest concentration (3.71 mg/g dry weight), followed by coumarin, 2-phenylethanol, syringaldehyde and hydrocoumarin and benzaldehyde. They could be the main volatile compounds in the leaf ofCinnamomum cassiaPresl, and could play an important role in the aroma and flavor of the leaf even in the finished liquors.