Background: Hypertension, complicating 5-10% of all pregnancies, is a leading cause of maternal and fetal morbidity, particularly when the elevated blood pressure is due to preeclampsia. The control of pregnancy-induced hypertension (PIH) appears difficult to achieve. Part of the reason for poor control of hypertension in these women might be limited PIH self-care knowledge. Aims: The aim was to find out the association between PIH and knowledge, attitude, and preventive practices among pregnant women. Settings and Design: A cross-sectional study was carried out in Gynae O.P.D., of Sir Sundar Lal Hospital, Banaras Hindu University, Varanasi. Materials and Methods: The study was carried out in the month of September to October, 2013 on every Monday in Gynae O.P.D., of Sir Sundar Lal Hospital, Banaras Hindu University, Varanasi. The target population includes all pregnant women between the age group of 15-49 years, who attended antenatal clinic. The interview schedules were administered to the women. Respondents were assured of anonymity and confidentiality to ensure honest response. Statistical Analysis Used: Statistical analysis will be done by Epi Info™ 7. Results and Conclusion: Finding of the study shows that >50% (60.49%) of women are unaware about hypertension. Those women belong to the age group of 20-30, and they also diagnosed with prehypertension. The overall incidence of Eclampsia is 13.58% in study population regarding PIH. Lack of exercise is a major cause to for hypertension. Pregnancies complicated by hypertensive disorders lead poor maternal and perinatal outcomes.