This paper discusses the characteristics of ancient literary criticism, including imagery criticism, intuitive thinking, and dialectical thinking, and explores the oneness of literary criticism and creation and its revelations in the study of modern critical history. The process of ancient literary creation is studied in depth, including using LSTM and BERT models to decode the formalized data of poems and control the metre. Meanwhile, the study of ancient literary criticism based on structuralist semiotics is introduced, exploring the operation mode of narrative grammar and two-layer narrative structure. Finally, old literary creation and criticism are discussed in depth through example analysis. By analyzing the course Appreciation of Ancient Poetry, the article demonstrates how literary criticism can enhance the understanding and evaluation of literary works from aesthetic and cultural dimensions. Overall, the article deeply analyzes the methods and theories of ancient literary creation and criticism and explores their application and development in the information age, providing valuable perspectives and tools for understanding and advancing the field.