In　this　paper,　the　cohesive　zone　model　(CZM)　and　numerical　computation　method　were　used　to　carry　out　inverse　analysis　based　on　the　previous　experimental　results　of　shearing　fracture　test　of　nickel　coated　multiwall　carbon　nanotube　added　sintered　silver.　The　cohesive　zone　models　of　sintered　silver　with　nickel　coated　multiwall　carbon　nanotube　was　obtained　through　numerical　reverse　computation　and　experiment.　Firstly,　the　load-displacement　(P-δ)　curve　can　be　obtained　directly　through　the　end　notched　flexure　(ENF)　test.　Then,　the　critical　shearing　fracture　toughness　GIIC　of　sintered　silver　with　nickel　coated　multiwall　carbon　nanotube　is　obtained　by　extraction　from　those　experimental　tests.　The　3D　finite　element　model　of　ENF　sample　with　three-point　bending　was　established.　A　reverse　analysis　method　is　presented　to　compute　and　determine　the　specific　cohesive　zone　law.　Finally,　the　cohesive　zone　model　of　sintered　silver　with　nickel　coated　multiwall　carbon　nanotube　are　obtained.　It　was　found　that　0.5　wt.%　content　of　nickel　coated　carbon　nanotube　added　sintered　silver　has　maximum　fracture　energy　and　maximum　shearing　stress.　Results　show　that　the　numerical　solutions　agree　better　with　the　numerical　result.　　©　2022　IEEE.