Background: Menstrual disorders such as amenorrhea, dysmenorrhea and premenstrual syndrome are particularly common among adolescent girls. The knowledge on normal menstrual cycle and managing these disorders properly is very essential for adolescent girls. Hence the present study was undertaken with an aim to assess the knowledge on management of menstrual disorders & nutritional anemia among adolescent girls and to evaluate effectiveness of planned teaching programme on management of menstrual disorders and nutritional anemia. Material and methods: with quasi experimental design, using random sampling technique, 40 adolescent girls were assessed for their knowledge on management of menstrual disorders & nutritional anemia followed by planned teaching programme was administered. After 15 days post test was conducted. Results: Majority of adolescent girls were in age group of 14years, 82.50% of them were having inadequate knowledge in the pretest, and 75% of them had moderately adequate knowledge in post test. Conclusion: The study concluded that planned teaching programme was effective in improving the knowledge level among adolescent girls.