Abstract: To reveal the mechanical properties and fatigue performance of stainless-steel clad rebar (SSCR) under cyclic loading with buckling, hysteretic tests were conducted on 12 specimens, considering their nominal diameter and length to diameter ratio. Based on the test results, the skeleton curves of SSCR under different length to diameter ratios are proposed, the strength degradation of SSCR at ultimate strain of each loading stage is investigated, and the fatigue life evaluation method is put forward for the SSCR with length to diameter ratio taken into account. It is found that the nominal diameter has limited influences on the strength degradation and fatigue performance of SSCR under cyclic loading, while the length to diameter ratio affects not only the strength but also the plastic deformation and energy dissipation capacity of SSCR. Test results show that: when the length to diameter ratio of SSRC exceeds 7, the obvious tensile and compressive strength degradation at ultimate strain of each loading stage can be observed and the tensile strength degradation linearly intensifies with the increase of length to diameter ratio multiplied by deformation coefficient. The fatigue life of SSRC mutedly decreases with the increase of length to diameter ratios.