The Infant Mortality Rate (IMR) in Kupang City in 2018 was 4 per 1,000 live births. The cause of infant mortality is mostly due to low birth weight. One of the causes of Low Birth Weight is preeclampsia. The proportion of preeclampsia in NTT Province is still high at 4.7% compared to the national proportion of 2.7%. In addition to harming the fetus, preeclampsia also has an impact on the mother, including an increased risk of diabetes, dyslipidemia, hypertension, congestive heart failure and cerebrovascular disease. The purpose of the study was to analyze the effect of health coaching based on the health belief model on the preeclampsia behavior prevention in pregnant women. The research method was quasi-experimental with pre-test and post-test with control group design. The population were pregnant women in Kupang City during 2021. The research sample were 60 pregnant women at the Health center in Kupang City. Data analysis used Wilcoxon test and Mann Whitney and path analysis. The different test showed that there was a significant difference between the control and intervention groups who were given health coaching based on the health belief model (p-value <0.05). The results of the path analysis showed that the effect of HBM-based health coaching on knowledge was 0.571, self-efficacy was 0.508, attitude was 0.678 and action was 0.287. Health coaching based on health belief model affects knowledge, self-efficacy, attitudes and actions. The path coefficient is positive which indicates that the health coaching based on the health belief model increases the knowledge, self-efficacy, attitudes and preeclampsia prevention actions.