The electrochemical reduction of carbon dioxide (CO₂RR) is a promising approach for producing essential chemicals, storing clean energy, and mitigating greenhouse gas emissions. Recent advancements have enhanced its performance, but challenges such as mass transfer limitations, salt accumulation, and flooding remain. Conducting CO₂RR in acidic media offers a promising solution by overcoming these issues. This review assesses H-cells and flow cells, highlighting their opportunities, challenges, strengths, and weaknesses. It also compiles recent advancements in CO₂RR under acidic conditions, focusing on performance metrics and strategies. Three key concerns in acidic CO₂RR are balancing CO₂RR and hydrogen evolution reaction (HER), enhancing selectivity, and exploring industrial applications. The review discusses core factors influencing performance, including local pH, cation effects, and catalyst design. Finally, it proposes future prospects for the development of CO₂RR technology.The electrochemical reduction of carbon dioxide (CO₂RR) is a promising approach for producing essential chemicals, storing clean energy, and mitigating greenhouse gas emissions. Recent advancements have enhanced its performance, but challenges such as mass transfer limitations, salt accumulation, and flooding remain. Conducting CO₂RR in acidic media offers a promising solution by overcoming these issues. This review assesses H-cells and flow cells, highlighting their opportunities, challenges, strengths, and weaknesses. It also compiles recent advancements in CO₂RR under acidic conditions, focusing on performance metrics and strategies. Three key concerns in acidic CO₂RR are balancing CO₂RR and hydrogen evolution reaction (HER), enhancing selectivity, and exploring industrial applications. The review discusses core factors influencing performance, including local pH, cation effects, and catalyst design. Finally, it proposes future prospects for the development of CO₂RR technology.