Usually, after the New Crown vaccination, if the recipient has no uncomfortable symptoms, he/she can have intercourse on the same day, but care needs to be taken to protect the vaccination site to avoid infection at the vaccination site. If the vaccinees have systemic or local adverse reactions or allergic reactions, such as fever, headache, weakness, nausea, local redness, swelling, hard nodules, itching, pain and other symptoms, or allergic urticaria, angioneurotic edema, etc., intercourse is not recommended. Intercourse will consume physical strength, accelerate blood circulation in the body causing vasodilatation, increase vascular permeability and cause increased leakage of fluid from the blood vessels, which will aggravate the above-mentioned adverse reactions or allergic reactions such as redness, swelling, hard nodules and rash. In addition, intercourse may cause sweating in the body, and if there is more sweating, it may also contaminate the vaccination site and cause infection, resulting in symptoms such as redness, swelling, pain, increased local skin temperature, and even abscess formation at the vaccination site, and sweating may induce a cold, which is not conducive to the performance of the vaccine effect and recovery from adverse reactions. Therefore, if the vaccinees have systemic or local adverse reactions or have allergic reactions, it is recommended to have intercourse after complete recovery. After the New Crown vaccine, there is usually no excessive impact on daily life. However, 2-3 days after the vaccination, it is recommended that the vaccinees rest more, do not overexert themselves, avoid strenuous exercise, and avoid bathing for 24 hours. Avoid spicy and irritating foods, and avoid hairy foods such as seafood, beef and mutton.