The purposes of this research were to: 1) study active aging condition 
2) study need for active aging development, and 3) construct and evaluate the model of knowledge management for active aging development in Tambol Pakpraek Municipality, Changwat Kanchanaburi.
In this study, the researcher used mixed methodology of quantitative and qualitative research. The sample for quantitative data were 331 elderly people in Tambol Pakpraek Municipality, acquired by stratified random sampling. The tool used for data collection was a questionnaire. The statistics used for data analysis was percentage. The collected data were the information about active aging.
The sample for qualitative data consisted of 50 elderly people in Tambol Pakpraek Municipality attained by purposive sampling. The tools used data collection were in  depth interview, group discussion, and participant observation. The collected data were the information about needs for elderly peoples quality of life development.
After the data collection, the researcher organized the construction and evaluation of the model of knowledge management for active aging development by brainstorming related persons i.e. 1) seventeen key informants in the community and a team of researchers, 2) eight members of the board for the evaluation of the model of knowledge management for active aging development.
The results of the study were as follows:
1) Related to active aging, most of elderly people in Tambol Pakpraek Municipality had some physical health problems i.e. high blood pressure, rheumatism, diabetes, heart disease, paralysis, palsy, stroke, and cancer. However, in the aspect of mental health, most of them had no serious psychological or emotional problems.
2) Related to needs for active aging development, most of elderly people in Tambol Pakpraek Municipality wanted to be taken care by related persons, especially local government officials. They also wanted to participate in community activities. Apart from that, they wanted to have more financial security, especially, obtaining more monthly monetary support from the government.
3) The investigation and the evaluation of the model in the aspect of usefulness, feasibility, and appropriateness, as whole, was at maximum level.
