A　finite　element　model　was　built　to　assess　the　combined　effects　of　internal　pressure　and　axial　applied　stress(sigma(A))　on　localized　stress　concentration　and　electrochemical　corrosion　at　defects　on　pipelines　under　the　mechano-electrochemical　(M-E)　interaction.　When　defect　angle　alpha　(i.e.,　included　angle　between　the　major　axis　of　the　defect　and　longitudinal　direction　of　the　pipe)　is　90　degrees,　the　maximum　stress　of　the　defect　is　enlarged　remarkably　with　the　increase　in　sigma(A),　leading　to　electrochemical　corrosion　at　the　defect　affected　greatly　under　the　M-E　interaction.　However,　when　alpha　is　0　degrees,　the　maximum　stress　and　electrochemical　corrosion　are　affected　slightly　by　the　sigma(A).　Besides,　when　the　hoop　stress　of　the　pipe　is　larger　than　its　total　axial　stress,　the　largest　corrosion　rate　at　the　defect　with　alpha　of　0　degrees　would　be　higher　than　that　at　the　defect　with　alpha　of　90　degrees.　Thus,　for　the　improvement　of　pipeline　integrity　management,　the　combined　effects　of　internal　pressure　and　sigma(A)　should　be　taken　into　account　for　a　more　accurate　prediction　of　local　corrosion　rate　at　the　defect　especially　with　alpha　of　90　degrees.