The core of CRSW type biological deodorization purification tower is an efficient biofilter tower, a composite filler that is conducive to biological adhesion and growth and a microbial dominant strain. Under appropriate environmental conditions, the microorganisms in the filter tower form a biofilm on the surface of the filler, using the inorganic and organic effects of the waste gas as a carbon source and energy, maintaining its life activities by degrading the odor substances, and decomgenerating the odor substances into odorless substances such as water, carbon dioxide and minerals to achieve the purpose of purifying the odor gases.