"Red Spirit Virtual Theme Exhibition APP" is an augmented reality application based on Unity3D and augmented reality technology plug-ins. Augmented reality (Augmented Reality, referred to as AR) is a real-time calculation of the camera image position and angle and add the corresponding image technology. It includes new technologies and new means such as multimedia, three-dimensional modeling, real-time video display and control, multi-sensor fusion, real-time tracking and registration, and scene fusion. It superimposes computer-generated virtual objects or non-geometric information about real objects onto real-world scenes to enhance the real world. Therefore, we use this technology to integrate the red spirit, so as to use new technology to promote the spiritual culture of our country, which can be accepted by the new generation of young people, so that the inheritance of spiritual culture can keep up with the trend of the times.