The invention relates to a method for removing sulfur and nitric oxides from flue gas, which comprises the step of contacting the flue gas containing sulfur and nitric oxides with an adsorbent under the condition of adsorption separation, wherein the adsorbent contains a heat-resisting inorganic oxide matrix, a metal component I and a metal component II; the metal component I is selected from one or more of groups of IA and IIA in a periodic table of elements, and the metal component II is selected from one or more of groups of VIB, VIIB, VIII and IIB in the periodic table of elements; the heat-resisting inorganic oxide matrix is 50 to 99 weight percent of the adsorbent; and the metal component I is 0.5 to 35 weight percent of the oxides, and the metal component II is 0.5 to 35 weight percent of the oxides. Compared with the prior art, the method provided by the invention has high desulfuration and denitrification performance and regeneration stability.