:西安事变的发生与长征的胜利在客观上存在着必然的联系 ,没有长征的胜利 ,就难有西安事变的发生。其联系具体表现如下 :1 .长征的胜利为把红军与东北军在西北形成的内战对立关系向统一抗日方向转化提供了条件。2 .长征胜利前红军对东北军的三次重大军事打击 ,是促使张学良、东北军走抗日道路的重要条件。3.长征胜利后中共与东北军、西北军在西北建立抗日统一战线是事变发动和解决的政治基础。4 .长征的胜利把党和红军的指挥中心放在陕北是事变发动和解决的重要因素 There is an objective link between the occurrence of the Xi’an Incident and the victory of the Long March. Without the victory of the Long March, the occurrence of the Xi’an Incident will be hard to come by. The links are as follows: 1. The victory of the Long March provided the conditions for the transformation of the antagonistic relations between the Red Army and the Northeast Army to the unified anti-Japanese course in the northwest. The three major military attacks on the Northeast Army by the Red Army before the victory of the Long March are an important condition for urging Zhang Xueliang and the Northeastern Army to take the anti - Japanese road. 3. After the victory of the Long March, the CCP and the Northeast Army and the Northwest Army established the anti-Japanese united front in the northwest as the political basis for mobilizing and resolving the incident. The victory of the Long March placed the command center of the Party and the Red Army in northern Shaanxi as an important factor in initiating and resolving the incident