Rodents are considered as one of the major pests of agricultural crops and stored food grains. Rodents are highly adaptable and it is difficult to check their population effectively. Natural products are an excellent alternative to synthetic pesticides as a means to reduce negative impacts to human health and the environment. There are several medicinal plants associated with reducing the male fertility potential in indigenous Indian medicine system. Aegle marmelos (L) Corr. commonly known as Bael, in Bengali, has various medicinal properties in the Ayurvedic system of medicine. Various parts of this plant (mainly the leaves, fruits, stem and roots) have been used in ethnomedicine for several medicinal properties. The present experiment is aimed at investigating the potential of bark extracts of Aegle marmelos (L) Corr. as an anti-fertility agent on male Bandicota bengalensis (Gray, 1835). Three various concentrations of aqueous extracts of barks were used for each group of male Bandicota bengalensis (Gray, 1835). The dose of 200mg/ 100ml, 400mg/100ml and 600mg/100ml barks aqueous was administered orally for 60 days through food to male Bandicota. It was found that the extracts had a considerable effect on reducing male fertility and there is positive correlation between dose increase and anti-fertility. Significant decrease in the weight of testis, decrease in number of offspring were observed. Histo-pathological studies of testis revealed elongated spermatids, degeneration of Sertoli cells. Prominent spaces were detected within the germinal epithelium signifying testicular cytotoxicity and necrosis. Many tubules showed lumen with reduced spermatozoa and Leydig cell. Our studies suggest that Aegle marmelos (L) Corr. bark aqueous extract may be used as potential rodenticide for controlling Bandicota bengalensis (Gray, 1835) population.