Abstract : Congenital anomalies are a major cause of infant mortality and an important contributor to childhood and adult morbidity. The aetiology of; however, lack of information about modifiable risk factors for malformations in cardiovascular development impeded the prevention of CHDs. We investigated an association between maternal lifestyle factors and the risk of CHDs, because epidemiological studies have reported conflicting results regarding maternal lifestyle factors and the risk of CHDs recently. The objective of study was to estimate the importance of maternal socioeconomic and lifestyle factors during pregnancy in the risk of congenital anomalies in the study population. A population based observational study was carried out in N.R.S. Medical College and Hospital amongst pregnant women who were carrying a baby with congenital from July 2021 to December 2021. Pregnant women were approached during their first antenatal acre visit at our OPD/ ER/ radiology department. All women who intended to carry their pregnancy and were ready to participate in the interview were included in the study. During the period 42 patients were included in the study as per inclusion criteria Thorough history taking and was done. Template was generated in MS excel sheet and analysis was done on SPSS software. In the present study, maximum cases of congenital anomalies 8 (19.05%)were in the age group of > 30 years in high income group category followed by 7 (16.67%) in the same group. Maximum cases of congenital anomalies were in gravidity in G4 and above 13 (30.95%). Preconceptual Smoking was found maximum in high income group participants i.e 8 (19.05%). About 27 (64.29%) of father were smoker while only 9 (21.43%) mothers were smoker. Drug History of mother was present in 11 (26.19%) of mothers while 27 (64.29%) mothers were having comorbid illnesses. Congenital heart defects were found in 13 (30.95%) studied population. Musculoskeletal system anomalies were present in 9 (21.43%), Urinary system anomalies were present in 6 (14.29%), Nervous system anomalies were present in 5 (11.90%). According to our study results, unfavourable maternal socioeconomic factors and smoking during pregnancy increased the risk of congenital heart defects.