五四时期 ,在中国思想文化领域各种学说的交流碰撞过程中 ,李大钊从理论与实际的结合上 ,先后批判了资产阶级的实用主义、改良社会主义、封建复古主义等反马克思主义思潮 ,为确立马克思主义在新文化运动中的主流地位做出了重要贡献 ,进而为中国革命性质的转变提供了思想武器。这种斗争 ,既是近代中国人民寻求真理轨迹的延续 ,也是中国人民经过认真选择而认同并接受马克思主义的开端 During the May 4th Movement, during the exchange and collision of various doctrines in the field of Chinese ideology and culture, Li Dazhao critically criticized the anti-Marxist trends such as bourgeois pragmatism, socialism improvement and feudalism as the basis for the combination of theory and practice. It has made important contributions to establishing the mainstream status of Marxism in the New Culture Movement and has thus provided the ideological weapon for the transformation of the nature of China’s revolution. This struggle is not only the continuation of the pursuit of the path of truth by the Chinese people in modern times but also the beginning of acceptance and acceptance of Marxism by the Chinese people after careful choices