Nanomaterials　are　widely　used　in　electrocatalysts　due　to　their　quantum　size　effect　and　high　utilization　efficiency.　There　are　two　ways　to　improve　the　activity　of　nanoelectrocatalysts:　increasing　the　number　of　active　sites　and　improving　the　inherent　activity　of　each　catalytic　site.　The　structure　of　the　catalyst　itself　can　be　improved　by　increasing　the　number　of　exposed　active　sites　per　unit　mass.　The　high　porosity　and　three-dimensional　network　structure　enable　aerogels　to　have　the　characteristics　of　a　large　specific　surface　area,　exposing　many　active　sites　and　bringing　structural　stability　through　the　self-supporting　nature　of　aerogels.　Thus,　by　adjusting　the　compositions　of　aerogels,　the　synergetic　effect　introduced　by　alloy　elements　can　be　utilized　to　further　improve　the　single-site　activity.　In　this　review,　we　summarized　the　basic　preparation　strategy　of　aerogels　and　extended　it　to　the　preparation　of　alloys　and　special　structure　aerogels.　Moreover,　through　the　eight　electrocatalysis　cases,　the　outstanding　catalytic　performances　and　broad　applicability　of　aerogel　electrocatalysts　are　emphasized.　Finally,　we　predict　the　future　development　of　pure　metallic　aerogel　electrocatalysts　from　the　perspective　of　preparation　to　application.