The invention discloses an anti-CO2 mixed conductor oxygen permeable membrane, a preparation method and application of the anti-CO2 mixed conductor oxygen permeable membrane. The chemical formula is A2BO4+delta, wherein delta is oxygen nonstoichiometry, A is one or more of La, Ce, Pr, Nd, Pm, and Sm, B is one or more of Mn, Ni, Cu, Zn, Ga, Al, Fe, Mg, and In. The preparation method is as follow: dissolving nitrate or acetate solution of each metal element in polyfunctional organic acid, calcining and grinding the pre-powder obtained by pyrolysis to obtain powder, performing compression molding on the powder, and sintering the powder to obtain the mixed conductor oxygen permeable membrane. The mixed conductor oxygen permeable membrane obtained by the invention has high oxygen permeation flux and good anti-CO2 performance, overcomes the defects of pyrolysis of a traditional perovskite material in the CO2 atmosphere, and can be used for selectively separating oxygen from an oxygen-containing mixer and catalysis reaction, and also can be used for producing electrodes of low temperature solid oxide fuel cells and solid electrochemical sensors.