The too much income disparities among different industries has drawn the attentions from all walks of life, but the quantitative researches in the academic world with some systematic methods on such problem are rare, and most of the current literatures are researches based the view of system factors.

This paper studied two issues: what make the intra-firm income dispersion and mechanism through which the income dispersion affects the firm performance.

Creative Destruction and Oscillating Enlarge of Income Inequality;

Decomposition of Rising Income Inequality based on the Distributions;

Factor analysis on the urban-rural income inequality in China;

The impact of economic transition and structure adjustment on resident income disparity and its path change during 1980-2002;

Studies on Means to Increase the Income of Poor Rural Households——Based on the analysis of income disparity among farmers;

A Study on Income Disparity and Human Capital Investment of Peasants in China;

An Empirical Analysis of the Influence of Income Gap between Urban and Rural Areas on Insurance Demand in Xinjiang;

Investment Strategy for Income Gap Per Capita Minimization;

Theil Coefficient Analysis on Income Gap and Inequality in China;

Since carrying out reform and opening up to the outside world, resident s income differential of our country has been expanded constantly, and the Gini coefficient shows a tendency of rising yearby year wich is due to imperfection of the adjustment and reform of development strategy, income distribution policy, and economic and market system.

In recent years the income differentials between the top income class of urban residents and the bottom class, the trade income differential, the region income differential have been increasing.

We should understand the current problem on the realistic background that during the opening and reform process,the income differential among different regions,between town and country and inside cities and towns are being extended continuously.