Cu electrode is very efficient for electroreduction of CO2，while electrodeposited nano-Cu is much better.With the aim of optimizing the electrochemical catalytic behavior of nano-Cu electrode material toward electrochemical reduction of CO2，the electrodeposition conditions，such as deposition time，H2SO4 concentration，deposition potential and Cu2+ concentration，have been investigated.SEM was used to characterize the morphology of nano-Cu.Finally，the nano-Cu was used to the electrochemical synthesis of propylene carbonate from CO2 and propylene oxide.The investigation indicates that the nano-Cu has greater catalytic ability toward the electrochemical reduction of CO2 and higher yield of propylene carbonate can accomplish by using nano-Cu electrode.