Method for recycling low-concentration gas resources

A method for recycling low-concentration gas resources comprises the following steps that fuel gas is introduced into a reactor and generates a reduction reaction with an oxidation-state oxygen carrier in the reactor, the fuel gas is exhausted after being oxidized, the oxidation-state oxygen carrier is reduced, and the reduction-state oxygen carrier serves as an oxidized substance in the reactor to generate an oxidation reaction; and low-concentration gas is introduced into the reactor in the oxidation reaction stage and generates an oxidation reaction with the reduction-state oxygen carrier, the reduction-state oxygen carrier is oxidized into an oxidation-state oxygen carrier, CO2, H2O and H2 are generated by the low-concentration gas and are exhausted, and finally complete conversion of the low-concentration gas is achieved. According to the method, a chemical looping combustion technology is used for utilizing the low-concentration gas with the concentration of 0.25%-1.5%, the system combustion efficiency