China's long-term dependence on coal fired power generation energy structure has caused serious environmental pollution, coal-fired power plant emissions of soot in the atmosphere is an important source of particulate matter, on the environment and human health caused serious harm. Bag type dust collector is a highly efficient dust removal equipment, has high purification efficiency, large treatment capacity, not affected by dust ratio resistance advantages and restrictions. Thus has the widespread application prospect. This paper first discusses the flue gas dedusting technology, integrated technology, the bag type dust remover, the bag type dust removing system related equipment design and selection. I will help him.