The　numerical　simulation　is　used　to　simulate　the　convective　condensation　heat　transfer　characteristics　of　the　fully　developed　section　of　the　H-type　and　round　fin-tube　heat　exchanger　channels　under　wet　conditions.　The　SIMPLER　algorithm　is　used　to　calculate　the　pressure　and　velocity　coupling.　The　wet　flue　gas　flow　rate　ranges　from　1　to　5　m/s,　and　the　water　vapor　mass　fraction　ranges　from　5%　to　13%.　The　effects　of　different　inlet　velocity　and　water　vapor　mass　fraction　on　heat　and　mass　transfer　coefficient,　heat　transfer,　condensate　flow　rate　and　fin　efficiency　of　H-shaped　finned　tube　and　circular　finned　tube　were　discussed.　The　calculation　results　show　that　the　heat　transfer　capacity　of　H-type　finned　tube　is　obviously　stronger　than　that　of　circular　finned　tube,　but　the　condensation　production　is　less　than　that　of　circular　finned　tube.　Meanwhile,　the　total　finned　efficiency　and　latent　heat　finned　efficiency　of　H-type　finned　tube　are　less　than　that　of　circular　finned　tube.　©　All　Right　Reserved.