“The Residents’ Income Index” is the first of five second-class subsystems in “The Measuring System of People’s Living Development Index of China”. Based on the fiducial value since 2000，the longitudinal measurement shows a largest rise in the residents’ income index of The West，followed by The Central Regions，The East and The Northeast，which means some preliminary effects of the national strategy of regional balanced development；Shaanxi，Yunnan，Guizhou，Anhui and Ningxia ranked top five. The lateral measurement based on no-gap ideal value in 2018 shows the gap still exists because of the poor coordination and balance；Shanghai，Beijing，Zhejiang，Shandong and Jiangsu ranked top five. If the countrywide residents’ income data should synchronously achieve a minimum ratio of the urban and rural until the bridging of the urban and rural ratio，the status index of people’s living development would be significantly enhanced.