The　development　of　metal-free　photocatalysts　with　high　efficiency,　stability,　and　broadband　solar　absorption　is　a　major　challenge　to　realize　green　and　sustainable　chemical　development.　Recently,　metal-free　nanohybrids　(BP/CN)　composed　of　black　phosphorus　(BP)　and　polymeric　carbon　nitride　(CN)　are　emerged　as　photocatalytic　hybrids　with　broadband　light-harvesting　capabilities　and　higher　photocatalytic　performance.　Herein,　the　latest　progress　of　BP/CN　hybrids　for　multifarious　photoredox　reactions　is　summarized.　The　different　heterojunction　types　of　BP/CN　hybrid　photocatalysts,　including　type　I,　type　II,　and　multicomponent　heterojunctions,　are　illustrated.　Furthermore,　the　relevant　applications　of　BP/CN　hybrid　photocatalysts　for　photocatalytic　water　splitting,　CO2　photoreduction,　N-2　fixation,　H2O2　production,　pollutant　decomposition,　and　bacterial　inactivation　are　discussed.　An　overview　of　the　challenge　in　this　area　and　the　directions　for　the　future　is　presented.