Introduction: Hypertension itself in pregnancy is still a matter of concern and a major challenge in antenatal practice, this will have an impact on both the mother and the fetus. Hypertension plays an important role in up to 15% of complications during pregnancy and postpartum. One of the risk factors for hypertension is high sodium consumption. Objective: to summarize effect of natrium on hypertension in pregnancy. Methods: Protocol for the Reporting of Systematic Reviews and Meta-Analyses (PRISMA) was followed in this research. From 2015 to 2023, three databases were utilized: PubMed, Science Direct, and Springerlink. After that, we did a rigorous evaluation of the articles that passed the inclusion and exclusion tests. This systematic review found 8 publications. Results: The results show that there is at least one research mentioning the intervention of a high-salt diet and a low-potassium diet. New guidelines for Na intake before pregnancy are needed to avoid hypertensive problems in pregnancy, according to this research. There is a significant correlation between the prevalence of hypertensive diseases of pregnancy and the amount of salt that pregnant women consume. Pregnant women with preeclampsia should have their blood magnesium levels monitored for interventional and prognostic purposes. Conclusion: Preeclampsia women could avoid hypertension throughout pregnancy by maintaining a healthy salt and magnesium intake in their diets and monitoring their blood magnesium levels regularly.