Introduction: In India, the percentage of obese women grow from 10.6% to 14.8%. Obese or overweight mothers during pregnancy and labor significantly increase the risk of prenatal, intrapartum, postpartum, and neonatal problems. The present study aimed to explore to explore the impact of maternal obesity on antenatal and immediate Postnatal Outcome. Material & methods: This observational cohort studywas conducted in the department of Obstetrics and gynecology, Tripura Medical College & Dr BRAM Teaching Hospital, Agartala for a period of 12 months, among all antenatal booked mother attended in this institute through OPD or emergency labour room and delivered in this hospital during the study period. Data was analysed using SPSS version 20.00at p <0.05. Results: 33% cases developed gestational diabetes mellitus during their antenatal period and 39% developed gestational hypertension. The proportion of cases who developed ante partum complications including gestational diabetes mellitus, gestational hypertension and preeclampsia were higher than in control groups (p value = 0.04,0.00,0.002 respectively).The need for induction of labour and caesarean section was found to be higher in cases than in controls (p =0.013,0.04 respectively). Conclusion: The results of the current study made it abundantly clear that maternal obesity had negative effects on both the mother and the fetus. Preeclampsia, gestational diabetes mellitus, gestational hypertension, preeclampsia, and an increased requirement for labor induction and surgical interference were all substantially correlated with maternal obesity.