Abstract:A nwe aristoloactam alkaloid, 7-methoxyaristololactamIV (1) together with l,2,3,4-tetramethoxy-5-allyl benzene (2),β-sitosterol(3), daucosterol(4) and apiole(5) were iso-lated from Asarum petelotii, they were identified by spectra data analysis. It noted that the aristololactam alkaloid was first time obtained from the genus Asarum. By means of GC& GC/MS, the essential oils individually from leaves and roots were seperatively analyzed qualitatively and quantitatively.