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Background: Non-pharmacological therapy has an important role in lowering blood pressure and controlling risk factors and co-morbidities. There have been many studies in the influences of banana, papaya, and watermelon (as a source of potassium) on blood pressure, but no one has examined the differences in influence between the three. Purpose: The purpose of this study was to prove the difference in the influences of banana, papaya, and watermelon consumption on the systolic blood pressure (SBP) and diastolic blood pressure (DBP) of preeclampsia pregnant women. Methods: Quasi-experimental research design with non-equivalent pre-test post-test with a control group. The sample was 32 pregnant women with mild preeclampsia in Banyumas District with a cluster sampling technique. Statistical analysis were using paired sample t-test, one way ANOVA and post hoc with IBM SPSS software version 25. Results: The results showed there were significant differences in the SBP mean of banana (p 0.003), papaya (p 0.022) and watermelon groups (p 0.004). There were significant differences in the DBP mean of banana (p 0.005), papaya (p 0.007) and watermelon groups (p 0.000). There were no significant differences in the SBP and DBP mean between intervention groups (p> 0.05). Conclusion: There was an influence of banana, papaya and watermelon consumption on SBP and DBP of preeclampsia pregnant woman, but there was no difference in the influences between intervention groups. Banana, papaya, and watermelon can be used as an alternative non-pharmacological therapy to reduce blood pressure in preeclampsia pregnant women.