The　ANSYS　material　curve　fitting　feature　was　used　to　evaluate　experimental　data　based　on　the　material　of　the　sealing　rubber　of　the　packer.　With　this　feature,　the　experimental　stress　data　was　compared　with　calculated　stress　data　for　different　hyperelastic　models,　the　more　accurate　Yeoh　model　was　chosen,　and　the　contact　stress　on　the　sealing　rubber　of　the　packer　was　calculated　by　using　Yeoh　model　in　ANSYS.　The　contact　stress　distribution　along　the　axis　of　the　sealing　rubber　was　attained.