Asymmetric supercapacitor as the new generation of supercapacitor,has the advantages of high specific capacity,specific power and long cycle life,etc.The working mechanism and development of asymmetric supercapacitor are reviewed.That carbon materials with high specific surface area composite and match with the inexpensive and good performance metal-oxide,conductive polymer,as well as carbon materials with different pore structure and hydrous metal oxides as positive and negative electrode may be the R&D di...