Abstract: 【Purpose/significance】Taking the overall national security concept as the guiding ideology, strives to make the ecological governance of online public opinion an important tool for the country to manage the country during the critical period of the great reju⁃ venation of the Chinese nation. Specifically based on the perspective of information ecology, the method and process of constructing a multi-dimensional map of the network public opinion ecology will be concentratedly analyzed.【Method/process】Firstly, analyzes the constituent dimensions of the network public opinion ecology, including the subject dimension, object dimension, and space-time di⁃ mension; secondly, based on the different dimensions of the network public opinion ecology, uses the social network analysis method, the knowledge map and the network complexity analysis method to construct a multi-dimensional map of the ecology of online public opinion; finally, taking the“Chongqing Wanzhou Bus Falling into the River”as an example, the construction of a multi-dimensional map of the ecology of online public opinion will be further explained.【Result/conclusion】Reveal the dynamic changes and evolution rules of the online public opinion ecology from the subject atlas, object atlas, and time-space atlas, and provide references and sugges⁃ tions for the supervision and governance of the online public opinion ecology.【Innovation/limitation】This article constructs the sub⁃ ject-object-time and space environment map of network public opinion from the perspective of information ecology, revealing the dy⁃ namic evolution process of network public opinion in all aspects. The current research case is only for the Weibo platform, and fol⁃ low-up research will focus on a wider range of new media platforms and types.