Abstract: Some Japanese scholars have kept denying that the Japanese army had stepwisely planned and prepared for launching the all-around aggression war against China,but the concrete facts prove that the Japanese army made plans and preparations to seize Peiping & Tientsin area and started the war.Kiyonao Ichiki,the captain of the Japanese army,used to announce proudly that he was the one to bring the July 7th Incident into being.On July 11th of 1937,the Japanese government decided to take the chance to beat China,and the Japanese navy and air force made the operation plans.By July 25th,Japanese army had finished the plan and preparations.On July 31st,the Peiping & Tientsin area was captured and the launch of war was completed.At the beginning of this period,the Japanese army attacked the locations with clear strategies.In the beginning phase,they focused on Lukouchiao,Wanpinghsien and the neighboring locations to cut off the communication of Peiping with outsides.In the middle phase,they lashed against the gates of Peiping and continued to attack the strategic locations and Nanyuan to besiege the city of Peiping.At the later phase,they launched the general offensive on Peiping and Tientsin.At the same time,the Japanese army made use of the so-called negotiation to gain about 20 days to distribute enough army to the North China.The 29th Legion of the Chinese Army was tricked to believe the possibility that the Japanese army could concede and settle the incident.By this way,Japanese army made stepwise plans and preparations to launch the all-around aggression war against China,which could be proved by their attack on the strategic locations and the starting of general aggression.But the Japanese army despicably acclaimed that it was because of “illegitimate action” of the 29th Legion of the Chinese Army that they had no choice but sending the army to the North China,and declared it was justifiable for them to launch the all-around aggression because the 29th Legion was not “sincere” and the national government not “introspective”.

Key words: the July 7th Incident, the 29th Legion of the Chinese Army, the Japanese garrison to the North China, the Guang'anmen Incident