For a period of time, the idea that science popularization should change from "knowledge make-up" to "value guidance" has been widely recognized and implemented. Especially in the era when the Internet has become an important channel for the public to obtain scientific and technological information, the function of science popularization is not only to spread scientific knowledge, but also to go beyond scientific knowledge - to the cultivation of scientific rationality, the cultivation of scientific thinking and the promotion of scientific spirit. Under this premise, it is more necessary to build a good science popularization ecology, purify the network science popularization environment, and strengthen the value guidance and public opinion guidance of science popularization. The outline of the national action plan for scientific literacy (2021-2035) and the national science and technology popularization and development plan for the "14th five year plan" respectively make arrangements for "implementing the plan for improving the ability of all media science communication" and "building an all media science communication matrix", At the same time, the latter also proposed to "rectify the behaviors of cheating the masses, disturbing society and affecting stability in the name of science popularization in the network communication, refute pseudo science and rumor information, and purify the network science popularization ecology". This has important guiding significance for carrying out popular science work in the network environment. The author believes that it is necessary to do a good job in network science popularization. First of all, we should provide the public with high-quality popular science content at the source, and let more scientific researchers participate in the production and production of popular science content, so as to ensure the scientificity and accuracy of the content. This is to solve the problem of "flowing water" in the supply of popular science content. Secondly, it is necessary for relevant platforms to strengthen the review and control of scientific content. Non scientific content cannot be labeled as popular science, but obvious intellectual errors and violations of the spirit of science must be resolutely eliminated. Of course, it involves not only improving the scientific literacy of review and control personnel, but also attracting more people with scientific backgrounds to participate in the review, but also clarifying the connotation and extension of popular science, To clarify its various boundary conditions. In fact, this is to solve the problem of communication channels of popular science. Thirdly, to a certain extent, the public should be able to distinguish right from wrong, eliminate the false and retain the true, which is actually the problem of solving the "ultimate goal" of popular science. The first two aspects require the participation of professionals, but the last point is really difficult and not easy. Here, in combination with the author's research on network science popularization, I will give you some tips. First, if a popular science article or video is emotional and factual, then we should be vigilant. Compared with the objective truth and scientific facts, people are often more easily affected by emotions. Therefore, in the network environment, the ability to distinguish facts from opinions should be one of the characteristics of a citizen with good scientific literacy. Second, choose a more authoritative popular science platform. As the explosive growth of information and knowledge and the access to relevant content are more convenient than ever before, in this era where real-time online information can be obtained with your fingertips, more effective information can be obtained by choosing a reliable popular science platform. Third, there was a saying on the Internet: absolute statements are usually unreliable, changes in conditions should be careful, and changes in dose will affect the conclusion. This actually summarizes some ways and means for us to discriminate the contents of popular science. Of course, there are other things that apply to