Taking "cultural genes" as the core of research, this paper deeply explores the cultural information connotation of the decorative patterns of Doucai porcelain of the Chenghua Reign in the Ming Dynasty, and proposes its cultural identification, coding and verification methods. Through a systematic analysis of the decorative motifs, compositional laws, color collocations and technical characteristics of typical Chenghua Doucai artifacts, the core "cultural gene" units in its decorative system are extracted. On this basis, it is proposed to construct a coding system for pattern connotation, formal combination and technological vocabulary to realize the structured description and storage of its cultural information. Finally, the coding system is cross-verified through various approaches such as stylistic comparison, process archaeology analysis and cross-media cultural context verification, thus putting forward an analytical framework for interpreting the cultural connotation of Doucai porcelain of the Chenghua Reign in the Ming Dynasty.