Herbal plants are generally defined as one year gramineous herbs with not any strict contexture. Because of unending advantages and their considerable benefits, plants with medicinal potentials are anticipated to be applied widely in human nutrition to improve not only the healthiness of human's body cells but also ensure the psychological health. Curcuma caesia Roxb. is a member of the family Zingiberaceae and popularly known as Kali haldi. In India it is found in West Bengal, Madhya Pradesh, Orissa, Chhattisgarh, and Uttar Pradesh states. It flourishes well in moist deciduous forest areas. Rhizomes of the plant are used for sprains and bruises and also employed in the preparation of cosmetics. This investigation is mainly focused on the extraction, phytochemical screening and in vitro anti-oxidant activity of Curcuma caesia. The yields were found to be (9.21% w/w of crude drug) of Hydroalcoholic extract Curcuma caesia roots. The results of phytochemical revels that the all polar and Methanolic and aqueous soluble compound was found to be present in Curcuma caesia extract. Antioxidant activity of the samples was calculated through DPPH assay. % inhibition was calculated as an indicative of antioxidant potency. The higher the % inhibition the better the activity. Ascorbic acid was taken as standard and the values were comparable with concentration ranging from 10 µg/ml to 100µg/ml. Key Words: Curcuma caesia, Extraction, Phytochemical, Anti-oxidant activity.