The new crown vaccine hand is very painful is mostly an adverse reaction to the vaccine, mild patients do not need treatment, serious cases can take anti-inflammatory pain medication. New crown vaccination after arm pain, mostly belong to the vaccine adverse reaction, generally speaking, the pain is not very obvious, there is no swelling, elevated body temperature and other conditions, can be without treatment, maintain adequate sleep, more water, three days or so time can gradually improve and relieve. If the pain is obvious, at the same time there is obvious swelling, itching and burning sensation, etc., then you need to carry out timely targeted treatment, such as follow the doctor’s advice to take ibuprofen extended-release capsules, celecoxib capsules and other anti-inflammatory drugs for treatment, while maintaining hygiene of the injection site to avoid infection. After vaccination, you need to take good care of the vaccine according to the instructions, so as not to aggravate the adverse reactions.