There are many interpretations of Emperor Jianwen whereabouts in Jing-nan-zhi-yi(a battle between Chengzu and Jianwen of Ming Dynasty).Based on the historical data of Ming-shi(the history of Ming Dynasty) and other history books,Emperor Jianwen didn't suicide in Jing-nan-zhi-yi,he escaped to somewhere with his intimated officials.Many scholars believed that Emperor Jianwen escaped to Jiangsu,Zhejiang,Yunnan,Guizhou or Sichuan Province,but without important historical data,those interpretations weren't be admitted in the academic circles.The author deems that Emperor Jianwen escaped to Qutan Temple in Qinghai Province based on two new important historical datas and other materials.