Background and aim: One of the most frequent pregnancy problems and a leading global cause of maternal and fetal death and morbidity is pregnancy-induced hypertension. In order to provide effective educational interventions, this research was conducted to assess and enhance the level of awareness and adherence about pregnancy-induced hypertension (PIH) among pregnant women in Ismailia city. Method: An interventional study (pre-test/post-test) conducted at family centers and antenatal out- patient clinic of Ismailia public hospital.It was carried out on 80 hypertensive pregnant women on treatment for at least one month. Interview closed-ended questionnaire were used to collect data which included; socio-demographic data, pregnant women's knowledge about PIH, Morisky eight-item Medication Adherence Scale for measuring adherence to PIH drugs, tool for measuring adherence to PIH health related behaviors and health system factors which may affect adherence to PIH. Results: Significant improvement was reported after the education to be; 35%, 30% and 35% high, medium and low adherence to PIH drugs respectively. The level of adherence to PIH health related behaviors before health education was; 18.8% high, 36.2% medium and 45% low adherence, improved significantly after the education to; 57.5% high, 38.7% medium and 3.5% low adherence. Conclusion The results clearly demonstrated the effectiveness of educational intervention program in promoting knowledge and adherence towards PIH.