Abstract:-Many previous studies showed Cyperus rotundus contained flavonoids, tannins, glycosides, furochromones, monoterpenes, sesquiterpenes, sitosterol, alkaloids saponins, terpenoids, essential oils, starch, carbohydrates, protein, separated amino acids and many other secondary metabolites. The previous works also showed that the plant exerted antiparasitic, insecticidal, repellent, antibacterial, antioxidant, anticancer, central nervous, neuroprotective, antiinflammatory, antipyretic, analgesic, hypolipidemic, weight control, antiplatelet, gastrointestinal, hepatoprotective, antidiabetic, anti-dysmenorrhea, dermatological and many other effects. This review was designed to highlight the chemical constituents and pharmacological effects of Cyperus rotundus.