Since Fukushima nuclear disaster in March 2011，more public attention has been paid to nuclear energy，and it led to a worldwide reconsideration on nuclear energy，which induced people to reflect and discuss the development means and technical paths of nuclear energy. This report is organized around four facts and issues，including the history of Japan’s nuclear development and policy，Fukushima nuclear disaster and influence，Japan’s policy adjustments after the nuclear crisis，and lessons of Japan’s nuclear crisis for China.