Abstract: With the continuous advancement of urbanization and digital transformation in China, the urban memory of buildings, spaces and places in cities is gradually becoming blurred.The digital preservation, reproduction and design of urban memory are particularly important.Shanghai is the birthplace of Chinese red culture.In addition to the tangible historical buildings in Shanghai, the information resources of red culture associated with them are particularly huge, which can serve as the fourth dimension of a three-dimensional space composed of buildings, spaces and places.The purpose of this study is to realize the "four-dimension" of "urban memory" and contribute to the integration of culture and tourism. Through data fusion across organizations, knowledge fusion beyond cultural memory carriers and the data innovation design and practice of the red cultural information resources in the cultural and tourism integration practice of "Shanghai Memory— Red Tourism", the paper combines the red cultural information resources with the city heritage organically. The digital knowledge innovation in the design of data fusion, accommodation, visualization, and augmented reality technology helps to solve the data isomerism of red culture information resources. It is conducive to interactive and experiential narrative expression, showing the scene, plot, time and space characteristics of urban memory.It will also promote the retention of the urban memory, enhances the sense of red cultural identity and social cohesion.

Key words: Cultural and tourism integration, Urban memory, Urban heritage, Red culture Information resources, Digital humanities