Section ⅰ The equity measurement and analysis on public expenditure in urban and rural area, estimates the trends of Gini Coefficient of urban and rural public expenditures, per capita public spending gap between urban and rural areas and urban-rural relative structure factor. 第一节公共支出城乡公平测度,测算出公共支出城乡基尼系数的变动趋势、城乡人均公共支出差距和城乡结构相对系数。