Abstract:Objective: The chemical components of essential oil from Agastache rugosa and Pogostemon cablin was analyzed by GC-MS. Method: The components were isolated and identified by GC-MS. The components were identified by their mass spectra. The relative content in percentage were calculated from the GC peak areas. Result: Forty-five and twenty-two components were identified in the essential oil of A. rugosa and P. cablin extracted by steam distillation. Conclusion: This paper reports the composition of essential oil between A. rugosa and P. cablin for the first time.