Guar (Cyamopsis tetragonoloba(L)) is an annual Herbaceous legume upto 3m in height, abundant in Tropical region of Africa and Asia. The plant has many indigenous system of Medications like Ayurveda, siddha and has been a part of many Traditional literatures. It is drought resistant and sustainable to wide range of soil types. In north Indian states it is cultivated for guar gum production and for use as forage. Plant is well known for its disease protective properties due to the presence of many bioactive components. Various parts such as leaves, seeds and pods are used in asthma, diabetes, inflammation, as Laxative, antibilious, anticholesteric, appetite depressor and hypolipidemic agent. Researchers have reported the presence of many essential Phytochemicals in plant responsible for the antioxidant activity of plant. Present review is an effort to describe the traditional uses, phytochemical identification, pharmacological activities and Bioactive components of plant.