The greatest theoretical innovation of the report to the 19th National Congress of the Communist Party of China is to have clarified the principal social contradiction in China now as being the one between unbalanced and inadequate development and the people’s ever-growing needs for a better life for the first time. Modern social welfare system construction with Chinese characteristics has become the lynchpin of achieving the two goals. Modern social welfare system is composed of the state welfare, market welfare and social welfare. The community welfare system is an important part of the social welfare system in a narrow sense. On Oct.28, 2016, the Ministry of Civil Affairs and other sixteen ministries together first launched Urban and Rural Community Service System Plan (2016-2020), which became the mark of setting the year 2016 as the first year of the Chinese community social work and community welfare system, and the approaching of the age of the Chinese urban and rural community welfare developing for the quality of life. Society has transformed from community service in the 1980s, undergoing the community construction in the 1990s, to the construction of community welfare system in the 2010s. Overall planning and rational designing of the Chinese modern community welfare framework and the advancing of community welfare and happy and harmonious life become the priority among national social policy agendas. Community welfare system and happy and harmonious community is not only the basic part of harmonious and happy society and happy life, but also the main path to a harmonious society and happy life. And also it can be the best perspective to observe happy life and harmonious society. Constructing happy and harmonious society, community, community service activities all require the focus on social welfare and community welfare construction. Chinese community welfare framework determines the essence, position and function of community service system and community service centers.