The third injection of the new coronavirus vaccine is generally referred to as the booster injection of the new coronavirus vaccine. After the injection, it should be noted that the injection site should not come into contact with water for twenty-four hours, and it should be forbidden to eat spicy and stimulating food for one week, and it should be avoided that strenuous exercise be avoided. The precautions for the booster shot of the new coronavirus vaccine are basically the same as those for the first two shots, and it should be given 180 days after the second shot. 1. The injection site should not come into contact with water for 24 hours after the third injection to avoid infection at the vaccination site. 2. You can’t eat spicy and stimulating food, such as garlic, chili peppers and peppercorns, after the injection. You also cannot drink alcohol or eat seafood. All these behaviors may cause adverse reactions to the vaccine. 3. You should not exercise strenuously for a period of time after getting a spot shot, as strenuous exercise sweat may lead to infection at the vaccination site. Secondly, strenuous exercise may induce the development of adverse reactions such as diarrhea and fever. After the third dose of the new coronavirus vaccine, if persistent fever or discomfort occurs, prompt medical attention is recommended.