In the paper, a fundamental analytical framework of problem is proposed. The contents of the framework which includes problem situations, person faces the situation and the relationships between the two mentioned factors. Various concepts of problems by others scholars are presented and discussed with the proposed framework. In general, it is found that the relationships between the situations and person faces the situations are overlooked. In the paper, the relationships in framework are emphasized. The attributes of relationships which will constitute the essential concept of problem classification and solving.