Hypertension is still the biggest problem for health especially in the elderly .A decrease in the function of<br />certain organs on the elderly that causes of hypertension .Hypertension is a condition where increase in<br />blood pressure rapidly and not stable or patients who had blood pressure more than 140 mmhg / 90 .This<br />research aims to analyse the influence of watermelon juice to a decrease in blood pressure on the elder<br />hypertension . The design of this research is pre analytic experiment with using the approach of one-group<br />pra-post test design .The population in this research is all for the elderly of hypertension in the village elder<br />posyandu ngudirejo diwek sub-district district jombang with the total sample of respondents as many as 25<br />.Sampling techniques used sample random sampling .The independent variable is watermelon juice , while<br />the dependent variable is a decrease in blood pressure on the elder hypertension ..An instrument of this<br />research using sheets of observation with editing data processing , as well , scoring , tabulating .And using<br />statistical test wilcoxon . The results of the study shows elderly decreased blood pressure and systole<br />dyastole .Before the provision of watermelon juice average blood pressure of systole 152,8 mmhg and<br />dyastole 88.4 mmhg .While after the provision of watermelon juice systole of blood pressure during a<br />diastole mmhg 138,4 74,8 mmhg .The results obtained wilcoxon test the value of p = 0.0001 &amp; it; 0.05 the h1<br />accepted .Conclusions in this research are no influence to a watermelon to a decrease in blood pressure in<br />the elderly and hypertension.