Background: COVID-19 pandemic have enforced numerous restrictions on daily living including social distancing. which had a negative effects on life satisfaction, social participation and mental wellbeing. Aim of the study: was to assess Life satisfaction, mental wellbeing and social participation among elderly before and during covid 19 pandemic. Subjects and Methods: Research design: A comparative descriptive design was utilized. Setting: Study was conducted in a rural area selected randomly from Sharkia Governorate, Egypt. Subjects: A purposive sample composed of 300 elderly who fulfilled the study inclusion criteria. Tools of data collection: two tools were used to collect the study data: Tool I : A structured interview questionnaire to collect data on demographic characteristics, medical history. Tool II: Lifestyle Behaviours Questionnaire which consistes of 3 parts part1: Short Life Satisfaction questionnaire.part2: The Short Warwick-Edinburgh Mental Well-being Scale (SWEMWBS). Part3: Social Participation questionnaire (SPQ). Results: Total life satisfaction mean score before covid 19 pandemic was 8.99±.12,compared to 5±2.31 during covid 19 pandemic, the total mean score of mental wellbeing among the studied elderly was 20.95±.52 before covid 19 pandemic compared to 9.63±4.23 during covid 19 pandemic, and the total mean score of social participation among the studied elderly was 16.21±2.15 before covid 19 pandemic compared to be 12.79±1.77 during covid 19 pandemic. Conclusion: covid 19 pandemic had a negative effect on the life satisfaction, mental wellbeing and social participation among elderly. Recommendation: health education program to the elderly about Life satisfaction, mental wellbeing and social participation. Keywords Covid 19, elderly, life satisfaction, mental wellbeing, social participation