Omicron is not a natural vaccine. Omicron is a mutated strain of the new coronavirus, which spreads faster than previous strains, has a greater ability to spread, and has a more insidious transmission process. However, there are fewer severe cases of the disease, and most of them are mild or common cases. Current research on omikron is not certain whether infection with omikron can protect against other mutated strains or produce stronger immunity, so it cannot be used as a natural vaccine. The vaccine is a preventive measure, but omikron can cause people to become infected with the disease, so it is necessary to do a good job of preventive work. In the face of the spread of Omicron, we should do a good job of personal precautions, when you go out to bring a good medical protective mask, when you go home to disinfect and wash your hands in a timely manner, in public places to maintain a one-meter line of social distance. Timely vaccination of the new crown vaccine, enhance their own resistance and immunity, pay attention to the daily diet and moderate exercise.