Arappu (Albizia amara Roxb.) is a traditional medicinal plant used in conventional medicinal systems of India and china to treat various ailments. The dried leaves were widely used in Tamilnadu for washing hair. In Ayurveda various parts of plant were used for treating piles, diarrhoea, gonorrhea, leprosy, leukoderma and jaundice and also it is used to cure boils, burns, eruptions, swellings, ulcer and as a remedy for dandruff. From time to time, a number of reports on the various phytochemical and pharmacological properties of Albizia amara and also in comparison with various Albizia species have been reported. This review focuses on the recent investigations on phytopharmacological properties of Arappu.