Menstruation is a universal and normal phenomenon that occurs during the reproductive age of females. Adolescence is a critical phase in which females prepare for and adapt to managing their menstrual bleeding in a safe and hygienic manner. Little available studies in India had no particular focus on adolescent school girls' knowledge and menstrual hygiene practice. This is an unrecognized and unaddressed public health concern in developing countries like India. Therefore, this study aimed to assess the Knowledge and menstrual hygiene practices of adolescent school girls and to estimate the prevalence and pattern of menstrual hygiene management among adolescent girls in the Bassi Tehsil of Jaipur.