In　this　paper,　a　total　of　70　experimental　flexural　tests　of　corroded　post-tensioned　prestressed　concrete　(PC)　beams　were　gathered　from　the　published　literatures.　Using　the　experimental　data,　a　comprehensive　databank　of　flexural　capacity　of　the　corroded　PC　beams　was　established.　Meanwhile,　four　existing　empirical　models　for　calculating　the　residual　flexural　strength　of　the　corroded　PC　beams　were　also　gleaned　and　contrasted　with　each　other　based　on　the　databank.　It　turns　out　that　three　of　the　four　existing　empirical　models　underestimate　the　flexural　capacity.　To　deeply　analyze　the　factors　affecting　the　flexural　capacity,　numerous　factors　were　discussed,　e.g.,　the　corrosion　ratio,　beam　width,　effective　height　of　the　beam　section,　concrete　compressive　strength,　and　the　ratio　of　strength　between　the　tensile　reinforcement　(including　prestressed　and　non-prestressed　reinforcement)　and　concrete.　It　is　found　that　the　corroded　post-tensioned　PC　beams＇　residual　flexural　capacity　is　affected　most　by　the　corrosion　ratio.　In　the　end,　a　better　empirical　model　is　proposed　for　computing　the　residual　flexural　capacity　of　corroded　PC　beams,　which　provides　accurate　and　effective　predictions　in　a　wide　range　of　corrosion　ratio　for　engineering　practice.