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Methane, one of the potential reduction products of ECO<jats:sub>2<\/jats:sub>RR, plays a crucial role in chemical production and energy storage. Recent advancements in ECO<jats:sub>2<\/jats:sub>RR have led to significant progress in methane production. However, existing research findings remain substantially distant from practical industrial applications. In this article, the recent research progress in ECO<jats:sub>2<\/jats:sub>RR for methane production is systematically reviewed. First, the theoretical foundations of ECO<jats:sub>2<\/jats:sub>RR and the key reaction mechanisms involved in methane production are elaborated upon. Then, catalyst design strategies are summarized aimed at enhancing methane selectivity and activity, including 1) fine tuning of crystal surface, morphology, and size; (2) defects engineering; and (3) tandem catalysis. In addition, the role of modulating microenvironment is reviewed, focusing on the effects of pH, ionic effects, and CO<jats:sub>2<\/jats:sub> concentration. 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