The invention relates to a method for eliminating and recycling nitric oxide in combustion tail gas. The method includes the following steps that A, the combustion tail gas containing the nitric oxideand an adsorbing agent make contact with each other under the temperature smaller than 150 DEG C to adsorb the nitric oxide in the combustion tail gas, wherein the adsorbing agent comprises active components loaded onto a molecular sieve carrier, the active components comprise precious metal, rare earth metal or transition metal, and by elementary content, the active components account for 0.1-20wt% of the total mass of the adsorbing agent; B, high-temperature air which has the temperature larger than 125 DEG C is injected into the adsorbing agent so that the adsorbed nitric oxide can be desorbed and conveyed into a combustion room along with the high-temperature air to be used as combustion-assisting air. The method is suitable for all kinds of fire coal, fuel gas, oil burning boilers and automobile engines, NOx pollution is eliminated, NOx is also used as a combustion-assisting oxidant, and recycling of contaminants is realized.