Adult Education is briefed to be “A.E” Adult Education is the main way of adults' resocialization. It proceeded by way of the social organizations and practiced by the mass of the people. The last goal of A.E is to promote one's social and economic position and attain the purpose of the social development. In this article, we use the Sociological views and concepts to explore the belief and problems of A.E.. It includes five main parts: 1. The belief and position of A.E. 2. The influence of A.E. is due to the characteristics of the modern society. 3. The Sociological concepts of A.E. 4. The social functions of A.E. 5. Sociology and the problems of A.E.