The principles of industrial waste gas treatment include activated carbon adsorption, catalytic combustion, catalytic oxidation, acid-base neutralization, plasma method and so on. The waste gas treatment tower adopts a five-fold waste gas adsorption filtration purification system, and the industrial waste gas treatment design is excellent, and the waste gas is purified and filtered layer by layer, with good results. For the problem of formaldehyde in the industry, the better treatment method is to use.