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) composite s 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.