Conventional　electrolytic　systems　(e.g.,　water　electrolysis)　which　rely　on　the　anodic　oxygen　evolution　reaction　(OER)　are　hindered　by　sluggish　anodic　kinetics　and　high　energy　demands.　Electrocatalytic　aldehyde　oxidation,　which　has　low　oxidation　potentials,　has　emerged　as　a　promising　anodic　reaction　to　be　coupled　with　a　diversity　of　electroreduction　reactions　such　as　the　hydrogen　evolution　reaction,　oxygen　reduction　reaction,　nitrate　reduction　reaction　and　carbon　dioxide　reduction　reaction.　This　approach　not　only　overcomes　the　limitations　of　traditional　electrolysis　but　can　also　achieve　production　of　H2　at　the　anode,　thus　enhancing　the　H2　production　efficiency　and　energy　utilization.　In　this　minireview,　we　delve　into　the　reaction　mechanisms　of　electrocatalytic　aldehyde　oxidation,　examining　the　interplay　between　low-potential　and　high-potential　reaction　pathways　and　their　impact　on　reaction　kinetics.　Furthermore,　we　discuss　the　latest　developments　in　catalyst　design,　with　a　focus　on　Cu　and　their　alloys/composites,　highlighting　innovative　strategies　to　improve　catalytic　efficiency,　stability　and　selectivity.　In　terms　of　application,　the　coupling　of　electrocatalytic　aldehyde　oxidation　not　only　holds　significance　for　H2　generation　but　also　offers　new　pathways　for　synthesizing　valuable　chemicals,　thereby　promoting　the　advancement　of　renewable　energy　and　green　chemistry.　©　The　Royal　Society　of　Chemistry　2025.