A　total　of　18　concrete-filled　steel　tube　stub　columns　were　designed　and　manufactured　to　experimentally　investigate　the　effects　of　depth,　size　and　location　of　local　corrosion　on　axial　compression　behavior　of　CFST　columns.　The　local　corrosion　defects　were　manufactured　by　machining　combined　with　electrified　accelerated　corrosion.　The　test　results　show　that　within　the　range　of　corrosion　parameters　designed,　the　bearing　capacity　of　CFST　columns　with　a　corrosion　depth　ratio　more　than　45%　decreases　sharply　with　the　increasing　of　corrosion　depth,　suggesting　the　depth　of　corrosion　defects　influences　the　bearing　capacity　of　CFST　columns　significantly;　when　the　corrosion　depth　ratio　is　less　than　45%,　the　circumferential　and　longitudinal　dimensions　of　defects　have　negligible　effect　on　the　axial　bearing　capacity;　moreover,　the　axial　bearing　capacity　of　specimens　decreases　with　the　local　corrosion　approaching　to　the　mid-height　of　the　column.　A　model　was　proposed　to　predict　the　axial　bearing　capacity　of　CFST　columns　with　local　corrosion　based　on　the　experimental　results　and　theoretical　analysis.　The　high　accuracy　of　the　proposed　model　was　verified　through　a　comparison　with　100　collected　CFST　columns　without　or　with　local　defects.　©　2023　Tsinghua　University.　All　rights　reserved.