李大钊社会主义思想是中国马克思主义形成初期的重要组成部分，是马克思主义传入中国后的第一个理论成果。长期以来，学术界对此问题的研究存在着学术知识来源不清、渠道不明等问题，从而影响到对整个李大钊社会主义思想体系乃至早期中国马克思主义的性质与特点的认识。理清李大钊社会主义思想的学术与知识来源，有助于更好地认识其理论体系的政治属性与价值，对进一步理解马克思主义在中国的传播状况也有重要意义。 本文在充分吸收国内外学术界已有研究成果的基础上，采用跨文本、跨语际比较研究方法，对反映李大钊社会主义思想的典型文本进行了剖析。发现：一、李大钊的《物质变动与道德变动》、《我的马克思主义观》在文本上分别借鉴了美国社会主义理论家路易斯˙布丹的《社会主义与战争》与《从最近的批评看卡尔˙马克思的理论体系》的部分论述；二、李大钊在社会主义与艺术、“平民”与艺术、劳动与美、物心两面改造论、艺术与自由五个方面受到了英国艺术理论家约翰˙罗斯金的影响；三、李大钊有关人口等方面的论述借鉴了意大利经济学家阿基尔˙洛里亚的《当代社会问题》、《社会之经济基础》相关部分文本。 本文进一步认为，李大钊对上述布丹等欧美思想家思想的吸收，更多是知识性、学术性的。在涉及唯物史观、阶级斗争、无产阶级专政等重大问题上，即在其体系上，则是属于马克思主义的科学社会主义的。对布丹等思想家思想的参考，吸收，则是对上述体系做了有益补充和完善。 本文的研究，初步弄清了长期以来学术界一直想弄清的李大钊社会主义思想的文本和学术理论来源等问题，展示李大钊所著文章丰富的文献来源。有助于理清李大钊社会主义思想的发展脉络与来源，有助于更好地认识马克思主义、社会主义在中国早期的传播情况。

Li Dazhao’s socialist thought is an important part of the early stage of Chinese Maxism. It is the first theoretical achievement after the Maxism was introduced into China. For a long time, there are many issues in the study of Li Dazhao’s socialism, such as indistinct sources and communication channels of Li Dazhao’s academic knowledge, which affect the understanding of the whole Li Dazhao’s socialist ideology, as well as the nature and characteristics of the early Chinese Maxism. Figuring out the academic and knowledge sources of Li Dazhao’s socialist thought will help to better understand the political attributes and values of its theoretical system, and to further understand the spread of Marxism in China. In this thesis, the typical text reflecting Li Dazhao’s socialist thought is analyzed using the comparative methods of cross text and cross language, on the basis of fully absorbing the existing research results from domestic and foreign scholars. It is found that: (1). On the text, Li Dazhao’s Material Changes and Moral Changes and My View of Marxism used socialism and war and the Theoretical System of Karl Marx in the Light of Recent Criticism for reference, respectively, which were written by the American socialist theorists Louis B. Boudin’s. (2). Li Dazhao’s socialist thought was influenced by John Ruskin, a British art theorist, in five aspects: socialism and art, “civilian” and art, labor and beauty, reconstruction on the two sides of matter and heart, art and freedom. (3). Li dazhao’s discussion on population and other aspects refer to the relevant parts of Contemporary Social Problems and The Economic Foundations of Society of Italian economist Achille Loria. It is further suggests that the absorption from American and European thinkers, such as Louis B. Boudin, is in the aspects of knowledge and academic. Li Dazhao’s socialist thought still belongs to the Marxist scientific socialism systematically, in the major aspects of historical materialism, class struggle as well as the dictatorship of the proletariat and other major issues. The reference and absorption of Louis B. Boudin and other thinkers’ thoughts is a useful complement to the system mentioned above. The blurry issues, such as the source of text and academic theory of Li Dazhao’s socialist thought, have been clarified preliminarily in this thesis, and the abundant literature sources of Li Dazhao’s articles have been demonstrated. It will help to figure out the source and development vein of Li dazhao’s socialist thought, which is beneficial for recognizing early transmission of Marxism and Socialism in China.