Electroreduction of CO2 into chemicals is of great importance in the global carbon balance.Although noble-metal based catalysts and single-atom catalysts (SACs) are known to be active for CO2 electrore-duction reaction (CO2RR),the high cost of noble-metal and the lack of effective synthesis approaches to prepare SACs have tremendously hindered the application.Non-metal doped carbon materials have attracted great interest because of their reasonable cost,chemical stability and excellent electrical conductivity.Nevertheless,the design and fabrication of highly efficient non-metal doped carbon electrocatalysts for CO2RR to meet industry demands still remains a big challenge.Herein,triphenylphosphine@covalent triazine frameworks (CTFs) composites were employed as precursors to fabricate N,P dual-doped porous carbon catalysts PCTF-X-Y (X represents the carbonization temperature,and Y represents the mass ratio of CTF to triphenylphosphine) for CO2RR.Due to the high specific surface areas and synergistic effect between N and P,the obtained PCTF-1000-5 exhibited high selectivity for CO production up to 84.3％ at-0.7 V versus the reversible hydrogen electrode (vs.RHE) and long-term durability over 16 h,which are better than the reported N,P dual-doped carbon catalysts in aqueous media.This work provides a new way to design and fabricate non-metal catalysts for electrocatalysis.