Leaves of Inula viscosa (L.) Were collected from fields in rural Damascus in Syria. Extracts of leaves were obtained by the classical method of continuous extraction using Soxhlet apparatus. The chemical composition was analyzed by semi-preparative HPLC and then identified by GC/MS. The analysis led to the identification of 68 components in leaves of which six were isolated and identified. Namely, Limonene, α-Pinene, Caryophyllene, α-Terpenine, Neryl Acetate, Geraniol, Extracts of leaves were characterized by a content of Terpenes