Tianjin digital epidemic prevention safety, the defense work in Tianjin on September 8, 2022 can be described as both digital and cultural means. On the one hand, it is the popularity of several apps from "Jin Xin Office" to "Healthy Tianjin" and now to "Digital Tianjin". On the other hand, it is all kinds of paragraphs and slogans calling for vaccination and nucleic acid testing, which greatly strengthens citizens' awareness of epidemic safety.