The actual data from Gongcai.com shows that most furnace kilns are in a rich oxygen combustion state, with an air consumption coefficient ranging commonly between 1.5 to 2.3. The oxygen content in flue gas reaches 8 to 12%, indicating that the actual air supply far exceeds the theoretical requirement. Therefore, inspecting, analyzing, and controlling the combustion quality of industrial furnace kilns has significant effects on energy conservation and emission reduction, as well as great practical significance for environmental protection.