Malocclusion is third most common condition encountered in children after dental caries and trauma. It’s prevalence ranges between 39% to 93%. It can also influence the psychological development of children. The new Index of Baby-ROMA, primarily characterized for primary dentition, is fast, sensitive and reliable for diagnosing and prioritizing orthodontic treatment needs. Aim: Aim of this paper is to assess malocclusion and Orthodontic Treatment Needs in 3-6 years old school going children using Baby ROMA scale. Materials and Methods: 220 children were examined according to BABY ROMA INDEX. The extraoral and intraoral examination was done. A proforma was prepared which contains personal details such as name, gender, age and scoring was given according to index. Result: Score 2 (36.8 %), score 3 (68%), score 4 (16.4%), score 5 (1.47%) as per Baby ROMA scale. Conclusion: The prevalence of malocclusion was 61.4%. The most common finding in this study were crowding, Caries and early loss of deciduous teeth followed by deep bite and cross bite.