In this paper, in order to study the best way to digitally protect industrial heritage, we take the industrial heritage of A city as the research object and build a platform for the digital protection of industrial heritage. In this paper, after the actual investigation of the current problems of industrial heritage protection in A city, based on the results of the investigation, the Unity 3D engine is applied to build an industrial heritage digital protection platform integrating the introduction of industrial heritage, virtual browsing, architectural drawings, and characteristic culture. In the ANOVA analysis of the willingness to use the relevant functions of the industrial heritage digital protection platform, those who know a little about the industrial heritage of City A are willing to use the production process and virtual experience functions, while those who don’t know much about the industrial heritage of City A are more willing to use the functions such as basic knowledge. The industrial heritage digitization platform has an impact on the user’s satisfaction due to its usability, reliability, findability, interactivity, openness, and immersion.