This was an observational follow-up study conducted in the Department of Obstetrics & Gynecology, Institute of child & mother health, Matuail, Dhaka. From January, 2014 to July, 2014. After getting approval from the authority, we selected our study participants by a purposive sampling technique and maintaining inclusion criteria. Consecutive 100 patients who were admitted in the hospital, were our study participants. The study observed in group I (44%) have normal BMI, in group II (35.2%) have lean BMI, in group III (15.4%) have over weight BMI and group IV (5.5%) have obese BMI. Birth weight <2.5 in group-II. Neonate complications was highest in group –I & group-II. The new born term babies’ outcome status is much higher than preterm babies in all the four groups. APGAR score were <5 in group-II, group-III and in group-IV. Mean birth weight was highest in group-IV, representing 3.76. Mean hospital stay was highest in group-II patients, representing 8 days. Maternal BMI is a potentially modifiable risk factor for adverse outcomes that can occur during pregnancy and the neonatal period