The work aims to sort out and analyze the definition and classification of Chinese design industry, and study the development strategies suitable for local design industry. Based on the development and evolution of the global design industry, the overall evolution trend of the design industry and the different development models of the design industry in the world were combed in detail, the triple industry connotation of the design industry was elaborated from the perspective of "cultural industry + digital creative industry + manufacturing industry", and the development strategy of Chinese design industry was discussed. The MUDP classification model of design industry was constructed, and the design industry was divided into four levels:"core level, compact level, dense level, and associated level". Since the 20th century, the design industry has been developing rapidly in China, but the research on its definition and classification still needs further exploration. Under the background of the new era, the MUDP classification model is proposed, which has certain practical significance in promoting the continuous innovation and evolution of the design industry and realizing the social value of the design industry.