In order to explore the situation of water resources carrying capacity in Ningxia, this paper analyzed the water resources carrying capacity in Ningxia during 2004-2014 by using the principal component analysis and factor analysis, then took into account comprehensively including water-support-capacity, soci-economic technology and soci-living level of five cities in Ningxia, and got water resources utilization index and classification criteria in different areas. The results show as follows: (1) The consequence of water resources carrying capacity is only fluctuated from 2005 to 2006 during 2004-2014, and the other years were consistent under the two methods, they both had steadily increased in the past 11years. (2) For the water resources carrying capacity of five cities in Ningxia in 2013, the descending order of principal component analysis are Wuzhong, Yinchuan, Shizuishan, Guyuan and Zhongwei; the descending order of factor analysis are Zhongwei, Yinchuan, Guyuan, Shizuishan and Zhongwei. (3) The threshold value of classification of water resources carrying capacity in Ningxia was established. As the result of principal component analysis, the higher grades of water resource exploiting are Wuzhong and Yinchuan, the medium grades of water resource exploiting is Shizuishan, and the lower grades of water resource exploiting are Guyuan and Zhongwei. As the result of factor analysis, the higher grades of water resource exploiting are Wuzhong and Yinchuan, and rest of three regions all have lower grades.