The invention relates to a treatment device for desulfurization and denitration of high-temperature industrial 
flue gas. The device comprises a 
smoke inlet 
pipe, a connecting 
flange and a 
smoke removing device body, wherein the 
smoke inlet 
pipe is of an inverted L-shaped structure, the smoke inlet 
pipe is of a hollow circular pipe structure, and the connecting 
flange is fixedly mounted at the endpart of the smoke inlet pipe; and the smoke removing device body is installed inside the smoke inlet pipe. Through the treatment device, the following problems are solved that when existing equipmentis applied to treatment of 
flue gas, a poor filtering effect and a short 
treatment time are obtained, 
filtration and 
impurity removal cannot be performed on the 
flue gas effectively, and harmful substances exist in the discharged 
flue gas; and when desulfurization and denitration treatment is performed on the 
flue gas, a reaction is performed through only contact of the 
flue gas with one side surface of a smoke removal pad, the other side surface of the smoke removal pad has a poor reaction effect with the flue gas, one side of the smoke removal pad is blocked easily after a long 
time of use,and the effect of flue gas treatment is affected.