Objective To analyze the chemical constituents of the essential oils from Calonyction muricatum. Methods The essential oils were extracted by steam distillation method, and its constituents were analyzed and identified by GC-MS. Results 19 compounds were identified which occupied 96% of the total peak area. The linoleic acid with relative peak area was 62.8%, the total aliphatic acids and other esters were 72%. Conclusion The essential oils from Calonyction muricatum were mainly aliphatie aciLd, which provide ...