Frailty is a major concern for older adults and is a syndrome involving physical decline that might lead to adverse consequences such as disability, falls, hospitalization, and death. Therefore, this study aimed to evaluate the effect of health promotion intervention on frailty prevention among elderly. Design: A quasi-experimental design (pre – post test) design was used. Setting: at the village of Elzankloun in Zagazige city, Sharqia Governorate, Egypt. Sample: A purposive sample consisted of 60 elderly. Tools: three tools used; Tool I: A structured interview questionnaire (contained two parts; Demographic characteristics, Health related data). Tool II: Frailty Status. Tool III: questionnaire to assess knowledge regarding frailty, nutrition &physical activity. Results: the mean age of the studied elderly was 65.17+3.88 years and 73.3% of them were males, also the studied elderly frailty post-intervention were non-frail 21.7%, pre-frail 73.3% and frail 5% while, pre-intervention 100% of them were pre-frail. Conclusion: there was a statistically significant difference between the studied elderly at pre and post-intervention regarding their total frailty status, and their knowledge. Recommendation: Replicate the study on a larger group; selected from different geographical areas in Egypt to obtain more generalized findings in relation to current study.