抗日战争时期是党的群众路线理论发展成熟并逐渐运用于实际的关键阶段。面对日益紧张的战争形势,中国共产党在深入学习马克思主义群众观的基础上,提出了坚持走群众路线的思想,并在这一思想的指导下开展了一系列实践活动。例如,为壮大抗日队伍,建立起了抗日民族统一战线;为保障前线及后方的经济供给,在根据地实行“减租减息”政策,并组织群众开展大生产运动;为纯洁党的思想、坚定革命信念,在全党进行了较大规模整风运动。可以说,抗日战争时期党群众路线的实践,为最终赢得战争的胜利起到了十分积极的作用,同时也为推进改革开放及中国特色社会主义建设提供了宝贵经验。 During the period of the War of Resistance against Japanese Aggression, the theory of the mass line of the party became mature and gradually applied to the actual critical stage. Facing the increasingly tense war situation, on the basis of in-depth study of Marxist mass views, the CPC proposed the idea of ​​persisting in following the mass line and carried out a series of practical activities under the guidance of this thinking. For example, in order to strengthen the anti-Japanese contingent, an anti-Japanese national united front was established; in order to guarantee the economic supply to the front and the rear, a “rent reduction and interest reduction” policy was implemented in the base areas and the masses were mobilized to carry out mass production campaigns; , Firmly believe in the revolution, and conduct a large-scale rectification campaign throughout the party. It can be said that the practice of the CPC and the mass line in the period of the War of Resistance Against Japanese Aggression has played a very positive role in the eventual victory of the war and at the same time provided valuable experience in advancing the reform and opening up as well as the construction of socialism with Chinese characteristics.