1931年九·一八事变后,在相当长的一段时间内,张学良一直执行蒋介石“攘外必先安内”的政策,拥蒋剿共。但从1935年冬以后,他的政治思想有所转变,并走上联共抗日的道路。本文拟对张学良政治思想转变的因素,作一探述。一、九·一八事变后,中日民族矛盾上升,国民党内部发生分化,张学良与蒋介石的矛盾也日趋表面化。由于日本帝国主义对中国的侵略,九·一八事变后中日民族矛盾上升为主要矛盾,中国社会阶级关系也发生了变化。在民族存亡关头,中国的民族资产阶级甚至地主阶级 After a September 18th Incident of 1931, for a fairly long period of time, Chang Hsueh-liang had always implemented Chiang Kai-shek's policy of “must first of all be allowed to enter the country outside the borders of the country, and suppressed Chiang Kai-shek.” However, after the winter of 1935, his political thinking was changed and he embarked on the road of the communist anti-Japanese war. This article intends to make some expositions on the factors of Zhang Xueliang's political thoughts. I. After the September 18 Incident, ethnic conflicts between China and Japan have risen and differentiation within the Kuomintang has taken place. The conflicts between Zhang Xueliang and Chiang Kai-shek have also become increasingly apparent. Due to the Japanese aggression against China by the imperialists, the ethnic conflicts between China and Japan rose as the main contradiction after the Sept.18 Incident and the class relations in China also changed. At the moment of national survival, China's national bourgeoisie and even the landlord class