In　this　study,　a　Z-scheme　heterostructure　was　meticulously　engineered　between　zinc　tungstate　(ZnWO4)　nanofibers　and　polymeric　carbon　nitride　(PCN)　nanosheets　to　augment　the　photocatalytic　degradation　of　tetracycline　(TC)　under　visible　light　irradiation.　A　cohesively　integrated　PCN/ZnWO4　photocatalyst　structure　was　synthesized　through　an　in-situ　gas-solid　reaction.　The　quantity　and　spatial　distribution　of　PCN　nanosheets　were　modulated　by　fine-tuning　the　gas　precursor　and　reaction　parameters.　Relative　to　pristine　ZnWO4　nanofibers　and　PCN　photocatalysts,　the　distinct　three-dimensional　PCN/ZnWO4　heterostructure　manifests　a　notable　enhancement　in　photocatalytic　performance,　attributed　to　its　plethora　of　active　sites　and　a　Z-scheme　configuration　that　bolsters　charge　separation　efficiency,　achieving　a　tetracycline　degradation　rate　of　95.4%　upon　exposure　to　simulated　sunlight　for　160　minutes.　The　employment　of　gas-solid　reaction　as　a　design　paradigm　pioneers　a　fresh　paradigm　in　the　strategic　assembly　of　Z-scheme　heterostructured　photocatalysts,　thereby　illuminating　a　promising　pathway　for　advancements　in　environmental　remediation　technologies.