High　throughput　screening　is　very　important　for　accelerating　the　discovery　of　fuel　cell　catalysts.　In　this　paper,　a　novel　electrochemiluminescence　(ECL,　a　technology　changing　electric　current　into　light)　imaging-based　screening　platform　for　electrocatalysts　used　in　fuel　cells　has　been　developed.　The　ECL　imaging-based　screening　platform　consists　of　bipolar　electrode　array-bridged　electrochemical　(EC)/ECL　twin　cells,　by　which　electrocatalytic　reduction　currents　of　O2　can　be　imaged　directly　by　ECL.　The　ECL　imaging-based　screening　platform　is　simple　in　instrumentation,　can　image　the　＇current-voltage＇　dependence　directly,　reversibly,　and　sensitively,　and　may　enable　the　activities　of　electrocatalysts　to　be　evaluated　in　a　high-throughput　way.　The　developed　ECL　imaging-based　screening　platform　is　envisioned　to　have　promising　applications　in　high　throughput　combinatorial　screening　of　electrocatalysts　for　fuel　cells.　©　2012　American　Chemical　Society.