An　electrochemical　quercetin　(Q.R.)　sensor　based　on　carbon　nitride　(CN)　copolymerized　with　2,6-diaminoantandantquinone　(DAQ)　was　assembled.　The　product　has　a　humongous　texture　and　excellent　processability.　The　as-synthesized　samples　with　uniform　surface　distribution　were　characterized　by　UV-Vis-spectroscopy,　PL,　XPS　NMR,　EPR,　XRD,　FT-IR,　BET,　and　SEM.　Furthermore,　samples　were　electrochemically　pickled　in　0.1　MPBS　solution　via　cyclic　voltammetry　(CV)　for　Q.R.　electrochemical　response,　interference　research,　electrochemical　active　surface　determination,　stability,　photocurrent　and　EIS.　It　was　found　that　current　response　surges　in　a　linear　way　with　increasing　Q.R.　concentration　from　0.015　µM　to　260　µM　with　less　than　2　s　of　response　time　and　a　recognition　limit　of　0.0025　µM.　To　assess　this　sample＇s　feasibility　to　be　used　as　a　sensor,　Q.R.　content　was　determined　in　different　real　samples　comprising　green　drink,　fresh　apple,　lamella,　and　reasonable　results　were　achieved.　The　current　study　proposed　a　new　approach　for　identifying　Q.R.　as　well　as　a　novel　breed　of　electrochemical　detecting　material.　©　2021