Abstract: Waste gases(CO₂,SO₂,NOx)in coal fume can be decomposed wholly and once by applica-tion of ultra-high voltage,narrow pulse,and at the same time smoke can be removed effectivelyInthe simulating experiments on industrial fumes treatment (normal pressure,fume temperature 180(℃),the decomposition rates of CO₂,SO₂,and NO_x are all over 80%,The gases are decomposed in-to monatomic molecule O₂,N2 gas and monoplasmatic particles such as S,C. The technical problemsfor industrial application has almost been solved.It will be the ideal new technique of high-efficientand low-cost in treating pollution of fumes.