We　reported　a　broadband　photodetector　with　a　spectral　range　of　365-965　nm，based　on　a　SnS2/InSe　vertical　heterojunction.　In　this　device，InSe　serves　as　the　optical　absorption　layer，effectively　extending　the　spectral　range，while　SnS2　functions　as　the　transmission　layer，forming　a　heterojunction　with　InSe　to　facilitate　separation　of　electron-hole　pairs　and　enhance　the　responsivity.　The　photodetector　exhibits　a　responsivity　of　813　A/W　under　365　nm.　Moreover，it　still　maintained　a　high　responsivity　of　371　A/W，an　external　quantum　efficiency　of　1.　3　×　105%，a　specific　detectivity　of　3.　17　×　1012　Jones，and　a　response　time　of　27　ms　under　965　nm　illumination.　The　above　investigation　provides　a　new　approach　for　broadband　photodetectors　with　high　responsivity.　©　2023　Chinese　Optical　Society.　All　rights　reserved.