The invention discloses a coal gangue ceramic wall and ground brick and a preparation method thereof. The coal gangue ceramic wall and ground brick is compounded from a base body layer and a surface layer. The base body layer comprises the following raw materials in percentage by weight: 30-68 percent of coal gangue, 0-25 percent of pulverized fuel ash, 15-30 percent of quartz, 15-30 percent of feldspar and 2-8 percent of bentonite. The surface layer comprises the following raw materials in percentage by weight: 40-55 percent of kaolin, 20-35 percent of quartz, 20-30 percent of feldspar and 3-8 percent of bentonite, wherein the pigment which is 0-8 percent of the weight of the material of the surface layer is additionally added into the material of surface layer. The coal gangue ceramic wall and ground brick has a double-layer structure compounded from the base body layer and the surface layer, and the working surface (surface layer) of the brick is lighter than the base body layer and may be white, light yellow, red or other colors set according to the demand, thereby overcoming the defects of deeper color and single hue of the coal gangue ceramic wall and ground brick manufactured by the conventional method and expanding the application field.