The present investigation aims to evaluate the phytochemical and antibacterial potential of different parts of A. marmelos. Thousands of species are acknowledged to have medicinal value and the use of different parts of several medicinal plants to cure specific aliments has been in vogue since archaic periods. Keeping this point in view, a study was undertaken to analyze the phytochemical and biological activity of a very valuable medicinal plant ‘Aegle marmelos’. Pieces of literature were collected from various journal articles, Government institutes and other relevant reports were studied and the major findings were summarized. Leaves of Aegle marmelos has been picked and collected from the local area of Chitwan, Nepal. During the present study, the extraction of the phytochemical was performed by Soxhlet extractor. The leaves were subjected to successive extraction using methanol inclusive of hexane as a solvent to procure extra activity test. Phytochemical screening of methanol extract and hexane extract leaves revealed the presence of alkaloids, terpenoids, tannins, etc. For the antibacterial activity test, the Disc diffusion method was used which showed the presence of S. aureus and E.coli. The study concluded that Aegle marmelos plant incorporated miscellaneous phytochemicals along with the antibacterial activity. Such phytochemicals derived from plant has a great prospect in contributing effective antibacterial agents to treat against intractable life-threatening diseases. Within this view, the present study has explored the efficiency of the Aegle marmelos as a valuable natural source.