Abstract：

Energy conservation is a great challenge facing the government during the Twelfth “Five-Year Plan “. Setting up the “Public bicycle system“ follows the trends of lowcarbon living, therefore, are developed quickly in the cities such as Hangzhou. In this article, various kinds of public bicycle systems worldwide are divided into three categories according to commercial operation mode. Advantages and disadvantages of these models are comparative analyzed. Finally, some thoughts and conclusions are given.

Keywords：

Public Bicycle System, New Institutional Economics, Commercial Operation Mode,Hangzhou