Abstract: The study of coal quality and element distribution characteristics in coal seam is of great significance to the clean utilization of coal.Sampling test is conducted on 9^# mineable coal seam in Renjiazhuang coal mine, Ningxia province, and detailed analysis of coal quality changes and trace element distribution characteristics of 9^# coal seam.The results show that the 9^# coal seam is a high-volatile, low-ash-medium ash, and medium-high sulfur gas coal from Renjiazhuang coal mine.The occurrence of sulfur in coal seams is mainly organic sulfur, the ash component is mainly acidic oxide, and the ash component index is low, indicating that the coal-forming environment is reducing.The coal seam is a light rare earth enrichment type, and the REY curve of the coal seam generally shows a right-dip and negative Eu anomalous V-shaped valley.The Li content in the 9^# coal seam is 2.97 times and 7.86 times the Li content of Chinese coal and world coal, respectively, and is certain potential for comprehensive development.