Present days due to the pathogenic bacteria and fungi, the human mortality rate has increased in number. The synthetic antimicrobial and antifungal are used in the treatment of various fungal and bacterial diseases, but have various side effects which limit's their use. Traditionally Pithecellobium dulce plant has been used for treatment of antifungal and antimicrobial infection. In this article we are comparing the activity of antimicrobial and antifungal properties of Pithecellobium dulce plant using leaves extract on gram negative bacteria,gram positive bacteria and fungi.Methanolic extraction of Pithecellobium dulce leaves was carried out using Soxhlet method and the phyto constitutional analysis was carried out for presenceof alkaloids, avonoids, glycosides, saponins, phytosterols, and triterpenoids.The inhibitory effect was determined by Cup plate method, by the measurement of zone of inhibition.The outcome was the leaves extract consisted of active phytoconstituents which were phenols, glycoside, sugar and avanoid due to which the extract showed signicant zone of inhibition,by which property of antibacterial and antifungal was listed. It can be concluded that the leaves of Pithecellobium dulce consist of active phytoconstituents which can be used as potent antimicrobials