Background: This study was conducted to assess the behavioural outcome in postoperative cases of neonatal unit. Material and methods: Ages and Stages Questionnaire (ASQ): It has been a valuable addition to the group of developmental screening tools based on parent completed questionnaire. Use of this is very simple and involves the active participation of parents in the evaluation of their child. ASQ was modified in 1997 and has been translated into various languages ever since. Overall study has shown good psychometric properties. No studies have been published in the Indian context so far. In this study we will evaluate the scores in Indian subjects. Developmental assessment Scale for Indian Infants (DASII), based on Bayley Scale of Infant Development (BSID) was used in this study as gold standard for developmental assessment. It assesses development in the age range of birth to 30 months and provides a measure of Motor development and Mental development as Motor Developmental Quotient (DQ) and Mental DQ, respectively, as in BSID. Although the published literature on its application is less, it is now a common score in practice. Developmental delay is defined on DASII as DQ score. As per AGES AND STAGES QUESTIONAIR those in white zones have normal development, those with grey zones need further evaluation and follow up while those in black areas need intervention by health personnel. All the data was selected randomly and was entered in to the Microsoft excel and tabulated, then the data will be analyzed with appropriate statistical tools “SPSS version 24”. Data was presented as mean with Standard Deviation or proportions as appropriate. Results: Out of total 100 children were enrolled in our current study, In case group 33 (66%) were male and 17 (34%) were female. In control group 27 (54%) were male and 23 (46%) were female. There was no statistically significant difference in Gender distribution of children between two groups, with p-value 0.2230 {p>0.05}. Using the “Chi- Square Test {χ2 – Test}” In case group mean birth weight (in kg) was 2.85 ± 0.49 kg and in control group mean birth weight (in kg) was 2.66 ± 0.57 kg respectively. There was statistically not significant difference in comparison of mean Birth weight (kg) at admission between two groups, with p-value {p>0.05}. Using the “Unpaired | t | – Test {|t|– Test}”. In case group mean age of children was 7.66 ± 7.002 days and in control group mean age of children was 4.26 ± 4.35 days respectively. Conclusion: We conclude that inpatient neonates who have undergone emergency surgical intervention(non CNS AND non cardiac) under general anaesthesia higher incidence of delayed neurodevelopment and behavioral outcomes when followed up at 6 month of age, due to a number of factors which include type of congenital anamolies and any associated complication, type duration and weaning of anaesthesia, post operative care , post discharge care and hygiene, regularity of follow and quality of feeding practices.