Sluggish　photogenerated　carrier　separation　and　serious　photo-corrosion　restrict　the　application　of　CdS-based　materials　in　the　field　of　photocatalysis.　Herein,　rationally　designed　orthogonal　field　which　consists　of　axial　polarized　internal　electric　field　(PIEF)　and　radial　internal　electric　field　(IEF)　is　realized　in　CdS-based　core–shell　heterojunction.　The　axial　PIEF　could　drive　efficient　separation　of　electron-hole　pairs　and　the　radial　IEF　could　alleviate　the　accumulation　of　carriers　in　the　end　of　nanorods.　Furthermore,　the　radial　IEF　provides　a　selective　bulk　holes　transmission　channel　and　consumes　in　the　Z-scheme,　which　can　effectively　alleviate　the　aggregation　of　holes　in　bulk　phase　and　interface.　Impressively,　two　IEFs　in　CdS@Mo-doped　CdS　core–shell　structures　synergistically　enhance　the　separation　efficiency　of　carriers　and　inhibit　the　photo-corrosion　of　materials,　and　the　exceptional　hydrogen　evolution　rate　of　11.23　mmol·g−1·h−1　is　obtained　which　is　approximately　11　times　than　that　of　pure　CdS.　This　work　discloses　a　new　route　for　enhance　CdS-based　photocatalytic　activity　by　in-situ　construction　of　orthogonal　field.　©　2022　Elsevier　B.V.