China’s epidemic prevention and control work has gradually become epidemic era does not mean that the epidemic will disappear completely，but may rise and fall from time to time，accompanied by turbulent public opinion and ideological struggle. The epidemic has become the most important factor affecting the current relations between countries，international pattern and order. Especially at the critical moment of global fighting against the epidemic，some Western countries have used the Internet and other channels to create public opinion，slander，and smear and make China a scapegoat，and carry out public opinion infiltration，ideological confusion and spiritual erosion on Chinese citizens. This has brought great risks and severe challenges to the network ideological security of our country. How to meet these challenges is a matter of immediate urgency.