The main objectives of this study are: i) to study level of people’s life-quality in Sukrudee community, Ta-raeng Sub-district, Bangkhen District, Bangkok; ii) to study leader's roles in people’s life-quality development in Sukrudee community, Ta-raeng Sub-district, Bangkhen District, Bangkok; and iii) to study obstacles and problems in people’s life-quality development in Sukrudee community, Ta-raeng Sub-district, Bangkhen District, Bangkok. It is a Mixed Methods: quantitative research, a survey research in which data are collected by using questionnaires and the size of the sample group was 150 out of 1,400 people determined by using Taro Yamane's table, and the collected data were analyzed by the statistical analysis program in social science to find various statistics; and qualitative research in which data were collected by using in-depth interview with 7 key-informants, and the collected data were analyzed by context content analysis technique.

The findings of the study revealed that:

1) The study of level of people’s life-quality in Sukrudee community, Ta-raeng Sub-district, Bangkhen District, Bangkok has been found that the overall were found at a high level, having considered each aspect, the aspect of social relations was in the highest level. The physical aspect: the leader supports and encourages people in the community to eat food being appropriate and beneficial to body; the mind: the leader encourages people in the community to realize the importance of Buddhist days by arranging a moral camp within the community continuously; the social relations: people in the community attend the meeting to consult and suggest ways to build good relationships within the community; and the environment: the community leader provides maintenance of water sources, canals within the community at the highest level.

2) The study of leader's roles in people’s life-quality development in Sukrudee community, Ta-raeng Sub-district, Bangkhen District, Bangkok has been found that the leader has played a great role in improving people's life quality in various aspects, namely: the physical aspect: the leader encourages people in the community to exercise more than ever in order to be completed; the mental: the leader encourages people in the community to receive moral training in order to polish the mind, such as practicing meditation in the Buddhist important days, chanting and sitting meditation; the social relations: the leader proposes budget to the government sector to help the underprivileged, the disabled, and the elderly to receive equal opportunities with people in the community; and the environment: the leader provides knowledge and understanding to people in the community to realize the true value of tree and should plant for replacement of the cut tree.

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