In　this　work,　poly(vinylidene　fluoride)　(PVDF)　membranes　with　hydrophilicity　as　well　as　preeminent　mechanical　strength　and　dye　removal　efficiency　were　fabricated　by　blending　with　three　dimensional　hydroxyapatite　nanoparticles　(HAPNPs).　Surface　chemical　composition　and　morphology　of　the　prepared　membranes　were　systematically　investigated　by　ATR-FTIR,　XPS,　XRD,　FESEM,　and　EDS　mapping　analyses.　The　results　verified　that　a　large　number　of　HAPNPs　were　successfully　embedded　on　the　modified　membrane　cross-sections.　Moreover,　HAPNPs　content　in　the　casting　solution　is　an　important　factor　that　could　have　profound　influence　on　the　structures　and　performances　of　PVDF/HAPNPs　blend　membranes.　The　optimal　membrane　M2　with　2　wt%　HAPNPs　exhibited　excellent　hydrophilicity,　outstanding　mechanical　strength　of　19.60　MPa,　and　high　water　flux　of　(2466　±　31)　Lm−2h−1.　The　maximum　static　adsorption　capacity　of　the　optimal　membrane　was　about　10.83　mg/g,　which　is　3.75　times　that　of　the　pristine　PVDF　membrane　(2.89　mg/g).　PVDF/HAPNPs　membranes　were　not　only　utilized　for　static　adsorption,　but　also　applied　to　dynamic　dye　removal.　The　possible　adsorption　mechanism　between　Congo　red　(CR)　and　HAPNPs　embedded　on　the　blend　membranes　was　firstly　discussed　in　this　work.　HAPNPs　interacted　with　CR　via　Lewis　reaction,　hydrogen　bond　interaction,　as　well　as　electrostatic　attraction　to　achieve　the　adsorption　effect.　Herein,　the　PVDF/HAPNPs　blend　membranes　with　extraordinary　hydrophilicity,　mechanical　strength,　and　dye　removal　efficiency　possess　tremendous　potential　for　practical　applications　of　wastewater　treatment.　©　2019,　Chinese　Chemical　Society　Institute　of　Chemistry,　Chinese　Academy　of　Sciences　Springer-Verlag　GmbH　Germany,　part　of　Springer　Nature.