Adenovirus vector vaccine reactions are usually mildly uncomfortable, but because of some variability in the individual constitution of the vaccinated person, it is not possible to generalize whether an adenovirus vector vaccine reaction is strong or not. Adenovirus-vectored vaccine usually refers to adenovirus-vectored novel coronavirus vaccine, which is a type of novel coronavirus vaccine. After vaccination with the new coronavirus vaccine, if the vaccine recipient is in good physical condition, he/she may not experience any discomfort, but most of the vaccinated people may experience localized redness, swelling, pain, and itching of varying degrees. In addition, some vaccinated people may have fever, fatigue, loss of appetite, arm pain, etc. A very small number of people may have serious adverse reactions such as chest tightness and dyspnea. Therefore, after vaccination with adenovirus-vectored new coronavirus vaccine, the adverse reactions may vary according to individual constitution.