In　this　paper,　Based　on　the　experimental　results　of　shear　fracture　tests　of　sintered　silver　joints,　the　finite　element　analysis　of　cracking　and　crack.　propagation　of　sintered　silver　joints　was　carried　out　by　using　the　cohesive　zone　model　(CZM)　and　numerical　calculation　method.　Through　reverse　analysis　and　experiments,　bilinear　cohesive　zone　model　is　adopted　to　simulate　sintered　silver　joint　failure,　which　could　provide　a　theoretical　guidance　for　reliability　design　of　SiC　power　module.