The catalytic combustion device of catalytic combustion equipment is mainly composed of a fire arrester, a heat exchanger, a preheating chamber, a catalytic bed, a fan and an electronic control cabinet. The working principle of the catalytic combustion equipment is to direct the organic waste gas into the catalytic combustion equipment, and raise its temperature to the required temperature of the reaction through the electric heater in the initial stage, the heat released after decomposition is heated by a heat exchanger to the organic waste gas entering the catalytic bed. The heat required for exothermic and heat exchange is balanced, the high concentration organic waste gas is disposed of by self-balance without electric heating. Catalytic combustion equipment is suitable for the treatment of high temperature, high concentration, continuous organic waste gas, and no secondary pollution, equipment investment and low operating costs. Catalytic decomposition at low temperature, preheating time, low energy consumption, long catalyst service life, purification rate of up to 97.5% . In the process of operation can be fully automatic control, stable operation of equipment, maintenance system equipped with perfect, easy operation and maintenance.