On December 12, 1936, a rare 'armed remonstrance' incident happened in Xi'an of China, this is the generally so-called' the Xi'an Incident'. This incident is far-reaching, for example: The left grew strong and insubordination broke out ahead of Sino-Japanese war, the Communist Party of China force, the government of the Republic of China moves historical facts. Though this incident has already been gone through for more than 70 years from today, persons who care about China's modern history may not totally understand the incident. Only from behind 1985, the Communist Party of China announced large quantities of historical documents related to 'the Xi'an Incident', which have revealed a lot of new facts, is suitable for scholar's deepening the discussion once again. Because of space restriction, this text only focuses on: (1) The key factor of breaking out, of 'the Xi'an Incident' (2) 'the Xi'an Incident's development and Chairperson Jiang's, escape (3) Questions about the Xi'an Incident.