Abstract: OBJECTIVE To establish a method for determine camphor in Xiaoyanzhiyang Xu by GC. METHODS Use capillary gas chromatography. Chromatographic column is CP-Sil 5 CB quartz chromatographic column(25 m×0.32 mm, 0.4 μm); FID flame ionization detector; carrier gas is nitrogen; usually specific flux of hydrogen and nitrogen is 1∶1~1∶1.5; flow ratio of hydrogen and air is 1∶10; velocity of flow: 1 mL·min^-1; split ratio: 20∶1; temperature setting: sampling input temperature 250 ℃; column temperature 280 ℃(temperature programming process: start from 60 ℃, retain 1 min, achieve 280 ℃ by temperature rising speed 12 ℃·min^-1, retain 3 min); detector temperature 300 ℃; sample size: 1 μL. RESULTS The linear range of Camphor was 50~400 mg·L^-1，r=0.999 9; the recovery of Camphor was 99.64%(RSD=1.19%) and it was stable in 6 hours. CONCLUSION The method is simple and easy, fast, accurate and repeatable. It can be used as quality control method for Xiaoyanzhiyang Xu.