At last some suggestions are put forward, such as increasing citizen s disposable income, increasing propensity to consume, cultivating policy environment in favor of risi.

This paper summarizes the general situations of people s disposable income in the last decade.

Modem consumption theory shows that the main factors influencing residents consumption are disposable income, consuming trends and the price level.

The income-house price ratio is refers to the house area that available income per person of downtown can pay in a country or an area.

Based on regression analysis and grey relation analysis of available income per person of downtown and increasing value of every industry in China, the quantity liner model of available income per person of downtown changing with increasing value of every industry is built in using ordinary least squares methods.

The writer sets up a grey predicting model to forecast the per capita disposable income of the urban households in China and the results confirm that it is scientific and feasible.

Instead,it is the rise of people s accumulated disposable income and the upgrade of supply mix towards mid-and-high-end market that pull the price up.