解放战争时期是中国新民主主义革命的决胜阶段，是关系国家和民族前途命运的历史时期。面对新的国内国际形势和历史任务，以毛泽东为代表的中国共产党人坚持把马克思主义基本原理和中国革命具体实践相结合，不断进行理论和实践创新，进一步丰富和发展毛泽东思想，把马克思主义中国化推向了新的高度和水平。系统梳理这一时期马克思主义中国化的理论与实践内容，进而深刻揭示其内在机理，对于把握马克思主义中国化的规律、推进当代中国马克思主义新发展具有十分重要的意义。

机理是指构成事物的各种要素之间相互作用、相互影响的基本原则和内在方式，是事物存在和发展的内在根据和动力，而机理研究则是这些原则和方式的理论再现。为此，本文坚持历史与逻辑相统一，采用文献研究和跨学科研究的方法，首先全面梳理了国内外相关研究现状，分析了马克思主义中国化的历史进程和解放战争时期的社会历史背景，系统总结了解放战争时期马克思主义中国化的理论成果（阶级分析、党的建设、武装斗争和新民主主义社会理论等）及鲜明特征。在此基础上，着重从实践性与理论性相统一、革命性与建设性相统一、主体选择与历史规律相统一、民族性与世界性相统一等四个维度揭示了这一时期马克思主义中国化发展的内在机理。

本文不是停留于对马克思中国化具体过程和具体内容的宏观叙述，而是透过具体过程和内容对其内在本质、根据和理论逻辑的探求和“整理”，为不断深化马克思主义中国化研究提供新的视角。

The period of the liberation war is the decisive stage of China's new democratic revolution, and it is also the historical period that concerns the future and destiny of the country and the nation. Facing the new domestic and international situation and historical tasks, the Chinese Communists represented by Mao Zedong insisted on combining the basic principles of Marxism with the specific practice of the Chinese revolution, constantly carried out theoretical and practical innovation, further enriched and developed Mao Zedong thought, and pushed the Sinicization of Marxism to a new height and level. It is of great significance to grasp the law of Sinicization of Marxism and promote the new development of Marxism in contemporary China by systematically combing the theoretical and practical contents of Sinicization of Marxism in this period and revealing its internal mechanism.

Mechanism refers to the basic principles and internal ways of interaction and interaction among various elements of things, and it is the internal basis and power for the existence and development of things, while mechanism research is the theoretical representation of these principles and ways. Therefore, this paper adheres to the unity of history and logic, adopts the methods of literature research and interdisciplinary research, first of all, comprehensively combs the relevant research status at home and abroad, analyzes the historical process of Sinicization of Marxism and the social and historical background during the war of liberation, and systematically summarizes the theoretical results of Sinicization of Marxism during the war of Liberation (class analysis, Party building, military) The theory of pretending struggle and new democratic society, etc. On this basis, the internal mechanism of the development of Marxism in China in this period is revealed from four dimensions: the unity of practicality and theory, the unity of revolution and construction, the unity of subject choice and historical law, and the unity of nationality and cosmopolitan.

This paper does not stop at the macro narration of the specific process and content of Marxism Sinicization, but through the specific process and content to explore and "sort out" its internal nature, basis and theoretical logic, so as to provide a new perspective for deepening the research of Marxism Sinicization.