BACKGROUND: The prevalence of prehypertension in the world reaches 20-25% with a figure that is still high in Indonesia (48.4%). The role of health promotion is substantial in an effort of prevention and treatment of hypertension. AIM: This study aims to determine the difference of effect between health promotion using media slides presentation and with video in increasing knowledge and attitude regarding the prevention of hypertension in patients at risk hypertension at Puskesmas Amplas. METHODS: his study uses a Quasi-Experimental design which from 48 samples that meet the criteria inclusion will be immediately given health promotion interventions with slides presentation and video. Respondents will be asked to fill out a questionnaire about knowledge and attitudes before and after the intervention. Data processing is done using the SPSS version 20 application. RESULTS: Distribution level of the knowledge of respondents before the intervention (Pretest) and after the intervention (Posttest) is (9.8, 2.68 vs 13.2, 1.58). Distribution of the pretest vs respondent's attitude level. Post test is (29.7, 2.76 vs 33.2, 3.52). Based on the comparison of effectiveness between video and slide presentation, the significance value of knowledge was 0.072, and the significance value of attitude was 0.000. CONCLUSION: There was a significant difference in effectiveness between video with a slide presentation on improving attitudes towards hypertension prevention, and there were no significant differences in effectiveness between videos with slides presentation on increasing knowledge about prevention of hypertension.