With the continuous development and progress of social economy and science and technology, my country’s Internet technology has developed rapidly. The popularization and application of the Internet has brought great convenience to the people, promoted the communication and interaction between the government and the people, and added new ways of expressing public opinion; the Internet is highly developed, and the government makes full use of its role to collect social opinions through Internet. Public opinion promotes the democratization and scientific rationality of public policies. This article will discuss the following aspects: first, focus on the influence of online public opinion on public policy, explain the research background of the article, analyze and organize it; second, consult relevant literature, sort out the related concepts of online public opinion and public policy and characteristics; third, analyze the value of online public opinion on public policies, including positive and negative effects, based on cases, data, and referenced literature; finally, put forward targeted suggestions and countermeasures for existing problems, including improvement. The government plays an important role in the construction of network infrastructure and strengthening the moral education of netizens. It is necessary to do a good job in guiding the network public opinion, devote itself to creating a good and healthy network atmosphere, and attach importance to the dual influence of network public opinion on public policies, to make it fully play its positive role.