Coughing and sputum after vaccination is usually not related to the vaccination, but may be due to upper respiratory tract infection or pneumonia after vaccination with the new crown vaccine, and prompt medical attention is recommended. Adverse reactions to the New Crown vaccine are usually not associated with coughing and phlegm. After vaccination, the human immune cells play a corresponding role, this time the resistance will be relatively lower than usual, easy to catch a cold, upper respiratory tract infections, there will be a cough with sputum, the condition is mild, you can drink more water, and closely observe the condition. After the above general treatment did not improve, cough, cough sputum aggravation. Need to go to the hospital for examination, if it is upper respiratory tract infection, pneumonia need to be treated with antibiotics, such as cefradine, etc., if it is a viral infection, you can take ribavirin tablets and so on. Cough with sputum after vaccination can be handled according to the above program, under the guidance of professional physicians to use drugs.