Objective: Adolescence is the period of rapid growth, connecting childhood to reproductivity. Because of improper diet and increased demand, there is a deficiency of nutrients, most commonly iron reflecting as iron deficiency anemia. One more important milestone is onset of menses in adolescence, which further adds to anemia. The age of menarche, cycle length, duration of flow, association of dysmenorrhea and PMS varies in every girl. Our aim of study is to know the age of menarche, the cycle pattern, and association of menorrhagia with anemia and overall prevalence of anemia in adolescent age group. Material and Method: We conducted our study in various schools of Udaipur city. Girls from 7th to 10th standard were included in the study with an age group of 10 to 16 years. The girls were given proforma to fill and Hb estimation was done by Sahli’s method. Conclusion: Mean age of menarche came out to be 13.5 years.