This research aims to study the folkway and social needs as well as constructing process social supporting and developing quality of life of the urban poor . . Mixed-method and interviewing were used with 222 urban poor in Kanchanaburi Province. Deep interviewing operating conference and group discussion were used with 10 people from selected group. Data was analyzed with descriptive statistics interpreted and described from empirical evidence. The research revealed that 1. Folkway of the urban poor: They had their own residence but rent the land. They were workers had no job stability. average income 8001 -11000 Baht no saving taking formal and informal on loan no yearly health check-up. They went to the government hospitals and used health assurance cards. They participated in festivals. traditions. Their income was the problem in quality of life. They needed to survive to have their own residence and to access the low interest loan. 2. Constructing process and social supporting of the urban poor were moneymaterials and workers in family. Emotional factors were culture traditions and community activities. Self-esteem was supported by budget. information and activities in quality of life. 3. The ways to develop quality of life were giving knowledge building learning and local wisdom centers budget supporting for small children in community promoting and expanding house project developing public utility adjusting landscape developing equally in public service setting welfare funds promoting children and teenagers to participate in community development.