The present invention relates to a top-down pipeline type air pollution prevention and deodorization apparatus, and the present invention is a first downward pipeline unit, a second downward pipeline unit, a first washing tank, a second washing tank, a first washing liquid injection means and a second washing liquid By applying the input means, it is possible to improve the contact efficiency while flowing in contact with the contaminated air and the cleaning liquid through the first downstream pipeline unit and the second downward pipeline unit in the same direction, thereby deodorizing and purifying the polluted air. On the other hand, with respect to the first downward multi-stage pipeline of the first downward pipeline unit and the second downward multi-stage pipeline of the second downward pipeline unit, the top end of each pipeline and the inside of the pipeline disposed at the center and bottom Equipped with an incremental screw and a turbulence forming screw, it is possible to form a turbulent flow while transporting the contaminated air and the cleaning liquid to be transported inside the pipeline while transferring the contaminated air. Through this, it is possible to further improve the contact efficiency of the contaminated air and the cleaning liquid, and through the extension pipes of the first downstream pipe unit and the second downstream pipe unit, the ozone input hose for introducing ozone is further installed. By including, it is possible to exert a function of removing polymer toxic substances such as formaldehyde contained in contaminated air.본 발명은 하향식 관로형 대기오염방지 및 탈취장치에 관한 것으로, 본 발명은 제1하향관로유닛, 제2하향관로유닛, 제1세정수조, 제2세정수조, 제1세정액투입수단 및 제2세정액투입수단이 적용됨으로써 제1하향관로유닛과 제2하향관로유닛을 통해 오염된 공기와 세정액에 대하여 동일 방향으로 흘러 접촉하도록 하면서 접촉효율을 향상시킬 수 있으며, 이를 통해 오염된 공기의 탈취 및 정화효율이 극대화될 수 있도록 하는 한편, 제1하향관로유닛의 제1하향다단관로와 제2하향관로유닛의 제2하향다단관로에 대하여, 각 최상부에 배치된 관로 선단 및 중앙과 하부에 배치된 관로 내부에 증속스크루 및 난류형성스크루가 구비됨으로써 관로 내부로 이송되는 오염공기와 세정액의 이송시 이송속도가 증대되도록 하면서 난류를 형성하여 이송되도록 할 수 있으며, 이를 통하
