With　the　rapid　advance　of　laser　technology　in　the　photonicera,　damage　to　precision　optical　instruments　caused　by　exposure　to　sudden　intense　laser　pulses　has　stimulated　the　search　for　effective　optical　power　limiting　materials　exhibiting　good　dispersion,　fast　response　speed,　and　good　visible　light　transparency.　In　this　study,　novel　binary　Ni-based　mixed　MOF　NSs　(M　=　Mn,　Zn,　Co,　Cd,　Fe)　were　obtained,　making　the　electronic　transition　more　selective　and　changing　the　band　gap　to　obtain　an　excellent　reverse　saturation　absorption　signal.　The　theoretical　calculation　results　show　that　with　the　doping　of　the　Fe　element,　the　band　gap　of　Ni-MOF　NSs　decreases　from　3.12　to　0.66　eV　of　Ni-Fe-MOF　NSs,　indicating　that　the　doping　of　the　Fe　element　has　a　positive　effect　on　the　reverse　saturated　absorption.　The　experimental　results　prove　that　the　optical　limiting　threshold　of　Ni-Fe-MOF　NSs　is　better　than　the　GNSs,　indicating　that　the　Ni-Fe-MOF　NSs　have　a　broad　application　prospect　in　the　field　of　nonlinear　optics　and　photonics.