This paper explores new methods for the inheritance and development of traditional cultural heritage under new cultural and creative concepts, seeks a new path of the coordinated development of traditional cultural values and cultural industry values, stimulates new vitality in the cultural industry, shapes influential traditional cultural symbols in China, and further enhances our country's cultural soft power. From the perspective of the new cultural and creative concepts, this paper analyzes the current development status of IP construction with traditional cultural heritage as the content. Combining the theory of ecosystems, the relationship between the inorganic environment, the producers, the consumers and the decomposers in the ecosystem is used as a reference to construct a traditional cultural heritage IP ecological chain model in the modern cultural industry. Then, this paper integrates design practice with Thang-ga art as the theme to verify the traditional cultural heritage IP ecological chain model and complete the design application. Under the new cultural and creative concepts, the construction of the traditional cultural heritage IP ecological chain has positive significance for the creation of traditional cultural symbols, the improvement of Chinese cultural soft power, the development of cultural industries, and the protection, dissemination and inheritance of traditional cultural heritage.