Neocoronavirus vaccine is a biological agent developed to prevent infection by the new coronavirus. Neocoronavirus vaccination can stimulate the body to produce appropriate antibodies, which can be used to prevent diseases caused by the new coronavirus. If you have a severe headache after taking the new coronary vaccine, it may be the reaction of the immune system after the vaccine enters the body as a foreign tissue, which is generally normal. After receiving the new coronary vaccine, in addition to possible headache, some patients may experience pain and hardness at the site of vaccination, as well as swelling, itching, erythema, and localized loss of sensation. Part of the population will also appear weakness, fever, myalgia, cough, nausea, dizziness, loss of appetite and other general discomfort, the symptoms are usually relatively mild, do not require special treatment, can disappear in 2-3 days on their own. However, a strong headache after the new crown vaccine may also be after the vaccination, due to personal reasons accidentally catching a cold or a cold, so that the patient mistakenly think that it is due to the vaccine. If the headache is more intense, local hot compresses can be applied in order to reduce the degree of excitation of the nociceptive nerves, improve blood circulation in the body, thereby accelerating the discharge of pain-causing substances, and lifting the stimulation and compression of the nerve endings, to achieve the purpose of alleviating the pain, and also localized massages, which can also help to alleviate the effect of pain. After observing at home for a period of time, if the symptoms persist or get progressively worse, you should go to the hospital in time. In addition, do not take a shower for 24 hours after receiving the new crown vaccine to avoid infection at the injection site. Diet should also be careful not to consume spicy and stimulating food, such as chili, garlic, mustard, etc. Also avoid eating hairy food, such as seafood, beef and mutton, as well as avoiding alcohol. Pay attention to rest, avoid overwork.