This　paper　utilizes　the　cohesive　zone　model　(CZM)　and　method　of　numerical　computation　to　conduct　inverse　analysis,　leveraging　the　existing　experimental　results　of　Single-Leg　Bending(SLB)　tests　of　sintered　silver　joints　with　different　metallization　layers.　Based　on　experimental　data,　numerical　inverse　analysis　was　conducted　to　determine　the　cohesive　zone　model　(CZM)　parameters　for　sintered　silver　joints　with　varying　metallization　layers.　Initially,　curves　of　load　and　displacement　(P-delta)　are　directly　obtained　from　the　SLB　tests.　Subsequently,　by　analyzing　these　experimental　data,　the　interfacial　fracture　toughness　of　the　sintered　silver　joints　with　different　metallization　layers　is　determined.　A　two-dimensional　finite　element　model　(FEM)　for　the　three-point　bending　of　an　SLB　sample　is　developed.　Ultimately,　the　cohesive　zone　model　of　the　sintered　silver　joints　with　different　metallization　layers　is　established.　The　research　findings　demonstrate　that　the　interfacial　fracture　toughness　is　highest　when　the　metallization　layer　is　Ni/Ag.　The　results　suggest　that　the　numerical　solutions　are　in　good　agreement　with　the　experimental　data.