A　comprehensive　literature　review　on　pre-stressed　concrete　beams　subjected　to　corrosion　reveals　that　most　experimental　studies　are　on　rectangular　sections　even　though　T-shaped　and　box　sections　are　more　widely　used　in　engineering　practice　with　post-tensioned　prestress,　in　particular　for　heavy　structures　like　bridges.　In　this　paper,　five　post-tensioned　T-shaped　beams　were　prepared,　four　of　which　were　subjected　to　accelerated　corrosion,　and　then　all　the　beams　were　subjected　to　the　four-point　bending　test.　Special　attention　was　directed　to　the　cracking　propagation　and　failure　patterns,　load-deflection,　load-strain　of　concrete　and　steel　strand,　ductility　and　flexural　capacity　of　the　test　beams.　The　experimental　results　show　that　the　flexural　behavior　of　the　test　beams　deteriorates　with　the　corrosion　degree　of　prestressed　strands,　especially　when　the　corrosion　degree　exceeds　2　%.　When　the　corrosion　degree　is　8.42　%,　the　failure　pattern　of　crushing　of　compressed　concrete　is　changed　to　the　rupture　of　the　wires.　The　corrosion　effects　on　the　load-strain　of　steel　strands　depend　on　corrosion　loss,　strand　position　and　loading　stress　state.　Corrosion　of　steel　strands　reduces　the　compressive　strain　of　concrete　at　the　same　compression　position　and　the　ultimate　strain　of　the　prestressed　strands　at　the　position　of　beam　end.　Finally,　a　numerical　model　is　proposed,　which　can　provide　accurate　and　effective　predictions　of　the　failure　pattern　and　flexural　capacity　of　the　corroded　post-tensioned　T-shaped　beam.