This　paper　presents　the　results　of　axial　compression　tests　of　concrete-filled　GFRP　tubular　(CFGT)　stub　columns　after　being　subjected　to　acid　corrosion.　Fifty-four　specimens　subjected　to　acid　corrosion　and　nine　specimens　untreated　with　acid　solutions　are　axially　tested.　The　main　parameters　considered　in　this　study　include　the　wall　thickness　of　GFRP　tube,　concrete　strength,　PH　value　of　acid　solution,　and　immersion　duration.　CFGT　stub　columns　after　being　subjected　to　acid　corrosion　are　all　failed　with　the　fracturing　of　GFRP　tube　and　crushing　of　core　concrete.　The　ultimate　strength　of　the　CFGT　stub　columns　corroded　by　acid　solution　decreases　remarkably　compared　with　those　without　acid　corrosion.　The　longer　the　immersion　duration,　the　lower　the　ultimate　strength　of　the　acid　corroded　CFGT　stub　columns.　Immersion　duration　has　the　greatest　influence　on　the　percentage　decrease　of　ultimate　strength　of　the　acid　corroded　CFGT　stub　columns,　followed　by　the　PH　value　of　acid　solution.　However,　the　effects　of　the　wall　thickness　of　GFRP　tube　and　concrete　strength　on　the　percentage　decrease　of　ultimate　strength　can　be　neglected.　Additionally,　the　finite　element　models　are　also　developed　for　the　acid　corroded　CFGT　stub　columns　by　the　ABAQUS　software　and　are　verified　with　the　experimental　results.　©　2020　Elsevier　Ltd