It is generally possible to receive the new crown vaccine without breakfast, but fasting is not required for the new crown vaccine, so it is recommended that the vaccinee eat breakfast before receiving the vaccine is better, because the body can replenish energy after eating breakfast, which may reduce the chance of adverse reactions to a certain extent. The new crown vaccine needs to be vaccinated according to the order of arrival of the inoculant, which may require a certain amount of waiting time, and after the new crown vaccine, it is also necessary to stay in the observation for 30 minutes, the overall inoculation time is longer, if you don’t eat breakfast to play the vaccine, it may lead to a long period of time in the state of fasting, which may cause hypoglycemia, dizziness, nausea, vomiting, blurred vision, palpitations, shortness of breath, fatigue, and even fainting. Even fainting and other manifestations. Although most of the vaccinated persons do not have obvious discomfort after receiving the new crown vaccine, there are a few persons who have adverse reactions that include the above symptoms, and skipping breakfast to receive the vaccine may cause or aggravate the patient’s discomfort. In addition, the progress of normal vaccination is affected by the susceptibility of vaccinated persons to stress reactions when they are in a state of starvation. Although it is recommended that vaccinees should eat appropriately to replenish energy before taking the new crown vaccine, they need to avoid spicy, stimulating, oily, raw and cold foods, and should also eat a light diet and ensure sufficient sleep after the vaccination.