The imbalance of resource collocates is the important reason which leads to the differences between development of city and village.

Regional difference of the influence of urbanization and education investment on urban-rural gap;

But in reality,the urban-rural gap in our country is big and the measures taken to narrow the gap are proved to be inefficient.

The article studies the evolvement of urban-rural educational expenditure gap in compulsory education from 1993 to 2005,and finds out that the urban-rural gap ratio of expenditure per-student first increases and decreases and then rises and declines now.

Based on this,we explain why the large scale floating flows have not enhanced the peasants-workers’ income,and why the huge rural-urban gap has not led to serious unemployment of rural labors in cities.

As underdeveloped inland province, shannxi puts up obvious dual economic structure, which can be approved by the fact that rural-urban gap always exists in shannxi province.

The big change happened on the gap within the rural area and the rural-urban disparity in China after the reform and the openning.

The imbalance of public goods supplied by the government for cities and countryside has already become the deep-leveled cause which influences narrowing the gap between urban and rural areas.

The loss of balance of public service provided by the government has already become the deep-leveled cause having impacted on narrowing the gap between urban and rural areas.

" It is quite clearly that the goal is to establish a urban and rural Scientific Outlook on Development, change the Dual economic structure, Narrow the gap between urban and rural areas, promote ecnomic and social harmony .

Based on the two-regional model of the spill-over effect of human capital,using co-integration test and ECM,this paper carries on an empirical study on investment and spill-over effect of rural human capital and difference between urban and rural areas in China.