Furthermore,in a society like China,where the rural population constitutes over 60% of the total,it is essential to enlarge the proportion of rural medium incomers in order to form a modern social structure.

Raising the proportion of the middle-income group is important condition for reducing the gap between the rich and the poor;

Several problems about enlarging the proportion of the middle-income group;

Based on an empirical research and relevant research results achieved at home and abroad,a definition is given to medium incomers,and an analysis is made on the features,distinction and relation of the medium incomers as the primary formation of middle class in China.

To enlarge the proportion of medium incomers is the new goal that was first brought up in the reports of the Sixteenth CPC s Conference.

Based on practical materials and professions,and discussed from three aspects of economical resources,social status and cultural resources, this paper pointed out that 8000 to 50000 RMB was about the annual income of the medium incomers in Hefei,estimated the number of them and analyzed the evolution of medium incomers in Hefei and the characteristics associated with them.

Optimizing the manpower capital structure and extending the proportion of the middle-income people;

Based on the relevant research results at home and abroad and by combining the target of building a well-off society in an all round way,there is a standard to define"middle incomers".

For enlarging middle incomers proportion and establishing socialist, a few problems should be paid attention to: deepening the population registered system, improving city-country s structure, deepening the reform of distribution system, quickening development of education, enlarging middle incomers proportion and so on.