Reported that C. Altissimum showed significant inhibitory effects on platelet aggregation.Although, the chemical consituents of leaf and bark essential oils of C. Altissimum have been studied,the antioxidant properties have yet not been studied. Hence,in the present work, an attempt has been made to explore the possible antioxidant properties by different methods which can give more comprehensive information. The present study aimed to examine the chemical composition of essential oil from C. altissimum bark and to investigate their antioxidant activities.