Polyvinylpyrrolidone　(PVP)　is　a　widely　used　water-soluble　polymer　that　can　act　as　a　pore　-forming　additive　in　ultrafiltration　membrane　preparation.　Here,　the　PVDF　hollow　fiber　membranes　were　prepared　via　the　c　-TIPS　method　by　introducing　PVP　to　the　casting　solution.　The　dual　PVP　roles　in　the　membrane　fabrication　process　enabled　the　production　of　PVDF　hollow　fiber　membranes　composed　of　bicontinuous　structures.　The　PVP　inhibited　PVDF　crystallization　and　then　reduced　the　gelation　temperature　of　the　casting　solution.　They　grew　faster　at　coarsening,　allowing　greater　growth　of　pores,　and　the　formation　of　gap　-connected　pores　and　interlinked　pores,　which　formed　the　bicontinuous　structure.　The　PVP　also　acted　as　an　effective　pore　-forming　agent,　giving　porous　outer　surface.　PVP　can　be　removed　almost　completely　from　the　membrane　and　did　not　lead　to　the　wetting　of　PVDF　membranes.　Therefore,　the　synthesized　PVDF　membrane　under　optimal　conditions　could　be　used　in　the　DCMD　process　with　a　maximum　vapor　flux　of　18　+/-　3　kg　m-　2　h-1,　the　pure　water　flux　in　ultrafiltration　process　reached　335.91　L　m-　2　h-1　bar　-1,　and　the　tensile　stress　was　5.8　MPa.　This　work　presents　a　new　route　for　preparing　PVDF　hollow　fiber　membranes　using　conventional　spinning　equipment　with　simple　operation　and　moderately　elevated　temperature　that　is　scalable　to　industry　level.