Vaccine booster arm pain should ensure adequate rest, appropriate hot compresses, if the pain is more intense, you can take medication. 1. Adequate rest: the phenomenon of arm pain after vaccination is a normal phenomenon. It is recommended that patients rest properly, should not use the vaccinated arm for heavy labor, after a period of time will be relieved. 2. Appropriate hot compresses: patients in the phenomenon of arm pain after vaccination, you can also take the way of hot compresses to relieve pain. Patients can use hot towels to apply hot compresses to the affected area, which can promote blood circulation and relieve the symptoms of pain. 3. medication: if the arm pain after vaccination booster shot is more intense and unbearable, you can take medication as prescribed by the doctor. Patients can take oral ibuprofen extended-release capsules, acetaminophen tablets and other non-steroidal anti-inflammatory drugs as prescribed by the doctor. Patients should rest when they experience particular pain in the arm after a booster shot. If medication is needed, it should be taken as prescribed by the doctor and not self-administered.