How to write the concept of library design. With the vigorous development of local culture and economy, libraries are paid more and more attention in major cities, and their development is closely related to various fields. It is no longer a single underground block or an isolated whole, but gradually becomes a part of various libraries. In this industry, the library has become the most important identity carrier of people's culture and ideals. The overall design of the library has become a complex and professional project, and the design and decoration of the library should reflect a unique style. This paper introduces the contents of modern library design concept, including the interpretation and thinking of modern library design concept, and there is a place worthy of reference, that is, cultural library. Today we will introduce the design theory of Wenchuang products. The main market of Wenchuang products can be divided into five sections, namely, the culture of Wenchuang products, technical product design, commodity design and brand design.