P hysical activity is the movement of human body that causing energy expenditure which is important for mental andphysical health, in pregnancy there is a lot of benefit of health from physical activity. Based on Yusrawati Dkk, Pregnant women that never did physical activity during pregnancy have the risk to increase their blood pressure. Moderate intensity of physical exercise is recommended to minimize the preeclampsia effect. Therefore the writer have interest in knowing the relationship of physical activity and the occurrence of preeclampsia in pregnant women. This study is an observational analytic with a cross sectional design involving 57 mothers ( age 20-35 years old) with > 20 weeks gestation. Data was obtained by questionnaire PPAQ, record of KIA book,checking blood pressure and urine protein. This data is analyzed with uji fisher exact using spss version 24. The results of univariate data analysis is 28 (49,1%) mothers do not do the physical activity, 22 mothers (38,6%) do mild physical activity, 7 mothers do moderate physical activity (12,3%). And the preeclampsia analytic, 11 mothers (19,3%) had preeclampia. Bivariate data analysis with Fisher Exact (p=0.000)This study found a significant relationship. This study found a significant relationship between physical activity and preeclampsia in pregnant mothers in Puskesmas Tegal-Angus