In this paper, the NO adsorption performance of Rh/MOF-177 was studied by pulse method. Based on further confirming the literature molecular simulation results which NO, O₂ and CO₂ were adsorbed very little and N₂ was hardly adsorbed, it was found that the MOF-177 material showed great carrier function, and promoted the atomic-sized high dispersion and stability of almost supported Rh particles on MOF-177. The adsorption properties of NO was greatly improved after Rh was introduced into MOF-177 which the adsorption capacity of Rh/MOF-177 with 3% Rh loading can reach about 310×10^-3 mmol∙g^-1 by pulse method and was about 15-20 times higher than that of O₂ and CO₂ with near 90% adsorption selectivity in simulated flue gas atmosphere. The NO adsorption capacity of Rh/MOF-177 was related to the reduced Rh⁰ which one reduced Rh⁰ adsorbed three NO molecules, and NO adsorption form on Rh/MOF-177 should be a trinitro-group (Rh(NO)₃) species.