To realize reasonable evaluation of the seismic behavior of in-service reinforced concrete （RC） shear walls under a frost action environment， using the relative dynamic elastic modulus as the freeze-thaw damage coefficient and combining with the modified Petersen model， a non-uniform freeze-thaw damage model is constructed. With the existing formula by accurately verified， the shear hysteretic model of intact RC shear walls is established. Then， by analyzing the variation trend of shear strain and shear force of the frozen-thawed damaged RC shear wall affected by parameters， the shear hysteretic model of frost-damaged RC shear wall is established by multi-parameter regression analysis. Based on the existing material data， the bond strength model of uneven freeze-thaw damage is established. At the same time， combined with the existing bond-slip model， the slip model of uneven frozen longitudinal reinforcement is established through theoretical derivation. Combined with the established non-uniform freeze-thaw damage model， freeze-thaw shear hysteretic model， and freeze-thaw non-uniform bond strength slip model， a numerical model of freeze-thaw damaged shear wall components is proposed. Finally， the accuracy of the proposed numerical model is verified by using the quasi-static measured data of 8 freeze-thaw damaged RC shear walls with different parameters. The results show that the numerical model established in this paper can accurately simulate the load-deformation relationship of freeze-thaw damaged RC shear walls under low-cycle cyclic loading， and can be used to evaluate the seismic performance of RC shear walls under freeze-thaw environment.