《礼记月令》是中国古代的时宪大典，其本质在于探究历象节律等自然知识何以作用于儒家政教，圣王法天而治何以借助自然时序展开。本研究以“历象与王政”为双重视角，在学术史脉络中，还原汉代《月令》经义阐释的历史演进轨迹。本研究认为，汉代《月令》学的核心价值在于通过历象与王政的相互构建，将自然秩序与政治伦理融合为天人合一的宇宙政教体系。《月令》由吸收公共知识而成，并以知识库的形式，被历代学者自助取择。本文首先聚集于西汉时训文献的理论溯源与生成脉络，表现了各个学派在吸取公共知识后，又各自塑造了自己的时训系统。而后探讨了西汉时令文书中所呈现的秦制承袭与儒家德政的交织特质。其次，解析两汉之际《月令》阐释的数术化特征，元成时期将《月令》纳入历象制度的阐释策略，使时令知识摆脱单纯秦政时禁的定位，获得天学依据。如魏相卦气说、李寻月令灾变、京房律算、刘歆钟律等，均体现了《月令》阐释的数术化的转向及其理论深度。再次，探讨两汉之际《月令》的礼制实践与经说的形成，从刘歆通过明堂礼的建构赋予其礼制特性，到追求经世大典的《白虎通》中《月令》师说体系的完善，再到司法领域的《月令》实践。本文通过此从文献到制礼、由经义到法度的演进逻辑，意在表现知识的重组过程及《月令》在东汉政治实践中特殊意义。最后，通过对蔡邕、郑玄《月令》学说的系统比较，将前文的历史性考察提升至经学思想辨析的层面。通过对其成书之论、历象观念、制度阐释的系统比较，揭示了二人《月令》学的特征，进而探究其经学的终极关怀与旨归。蔡邕以《月令》为枢机，将一切周代王官知识囊括于该体系之下。郑玄则一准于《周礼》，消解《月令》的自身体系，有所选择地将《月令》文本片段作为周公之法的脚注。本研究通过梳理《月令》在汉代经学体系中的演进过程，揭示了其在知识整合、制度渗透与思想重构中的多重功能，为理解中国古代天人关系思想及其政治哲学特质提供了重要的学术参考。
Han Dynasty Yueling studies, as a unique knowledge system integrating astronomical phenomena and imperial governance, have long suffered from fragmented research perspectives, necessitating systematic theoretical reconstruction.Through textual reinterpretation and institutional practice, Han Yueling studies completed a paradigm shift from practical seasonal manuals to cosmological legal codes, driven by the dynamic interplay between astronomical observation and imperial political demands.By tracing textual divergence, doctrinal evolution, ritual reconstruction, and paradigmatic differentiation, this study deciphers the interaction between Yueling hermeneutics and political praxis, revealing the inherent logic of Han Confucianism in synthesizing cosmic and human orders.Western Han seasonal texts formed a pluralistic knowledge system through intellectual synthesis. While Lüshi Chunqiu and Shi Ze Xun established a "celestial-policy" correspondence via twelve-month frameworks, Guanzi's "thirty-season" system and military texts like Yinqueshan Han Slips emphasized utilitarian governance. Dong Zhongshu redefined Five Phases as ethical cosmology, while legal documents blended Qin statutes with Confucian moral governance, laying foundations for imperial legitimacy.The Eastern Han witnessed Yueling's numerological turn and ritual institutionalization. Under Wei Xiang and Li Xun, Yueling transformed from taboos to calendrical systems. Jing Fang’s "sixty-pitch" theory and Liu Xin’s "harmony of pitch and calendar" model expanded its mathematical and symbolic dimensions. Wang Mang’s Mingtang rituals elevated Yueling into political symbolism, marking its transition from knowledge to statecraft orthodoxy.Eastern Han Yueling studies bifurcated into "mathematical empiricism" and "Confucian symbolism." Cai Yong reconstructed celestial coordinates via Sifen Li measurements, creating an open system accommodating temporal changes. Zheng Xuan, prioritizing Zhouli, embedded astral phenomena into ethical frameworks through "star-field correlations." Their divergences in acoustics and institutional interpretation epitomized the tension between Han scholastic rationalism and symbolic hermeneutics.Cai Yong and Zheng Xuan’s interpretive divergence reflected ontological fissures in Han Confucianism. Cai treated Yueling as a flexible knowledge repository, sustaining Han institutions through "adaptive methodologies." Zheng deconstructed Yueling to reconstruct an idealized Zhou model via Zhouli absolutism. Both strategies demonstrated Eastern Han scholars’ ingenuity in reconciling political crises with classical authority.Han Yueling studies evolved through the dialectics of tian (cosmos) and wang (governance): Western Han synthesized "heaven-human correspondence" frameworks, while Eastern Han bifurcated into empirical and symbolic paradigms. Its development followed three dialectics:1)open knowledge systems versus closed doctrinal structures; 2)astronomical empiricism counterbalancing political symbolism; 3)pragmatic governance needs contesting historical classicism. This "dynamic equilibrium" enabled Yueling to maintain cosmological coherence while retaining political relevance, ultimately shaping China’s classical paradigm of "astronomical statecraft."
