In summary, the acid-humidification strategy markedly efficiently prevents salt precipitation, improving the operational stability of CO₂RR MEA electrolyzer. This study highlights the feasibility of managing ion behavior through pH regulation, meanwhile underscoring the importance of the acid humidification method in extending electrolyzer lifetime, paving a solid path toward the commercialization prospects of CO₂RR technology. In addition, the practical adoption of this strategy must also consider long-term operational factors, including the stability of membrane in an acidified environment, corrosion management, and overall system safety. Continued research into these areas will be essential to fully unlock the commercial potential of this innovative approach.