Abstract: The development of the quality of life of the elderly in Khlong Sam Subdistrict have a purpose to study the quality of life of the elderly and the potential to take care of the elderly of the community, organization and the elderly to make plans and methods for improving the quality of life of the elderly of the Khlong Sam Subdistrict Administration Organization and to develop the potential of the elderly in self-care and others and capacity development administration and management of organizations, personnel and communities to improve the quality of life of the elderly in the area. This research uses mixed method research between quantitative and qualitative research by distributing questionnaires for 400 elderly people. The qualitative research with in-depth interviews, focus group and community forum which are the organization executive, personnel related to the elderly and the community president or local representative 90 people. The tools used in the research were questionnaires and group interviews and the community forum. The quantitative data analysis using descriptive statistics with percentage, mean and standard deviation. The qualitative data analysis using interpretation and conclusion. The overall quality of life development of the elderly is at a moderate level. When considering each item found that the majority is the quality of life, followed by the potential of the community and family and the last one is the policy of Khlong Sam Subdistrict Administrative Organization. The community and family potential, overall is at a medium level. When considering each item, it was found that the majority of the elderly were cared for by their children when they were ill before they were admitted to the hospital, followed by the elderly receiving care from their children and families. The last one is to join various groups such as clubs, groups, funeral aid groups, elderly club, coffee council or various institutions in the society of the elderly The elderly potential, overall is at a medium level. When considering each item found that the majority is the ability to take care of the elderly, followed by the management of a pleasant living environment for the elderly.