The redness, swelling and hard lumps around the eye of the vaccinated person are often found by the vaccinated person as a result of adverse reactions of the organism after vaccination. The injection of biological products into the skin during vaccination will cause the body’s immune system to produce immune substances in response to stress, which will help the efficacy of the drug, but may also lead to adverse reactions in the vaccinees, and the causes and solutions may include the following: I. Personal factors: The vaccinees may have personal physical reasons, such as a weaker physique, a history of major diseases or when they are in a state of excessive fatigue, leading to physical It may also be related to genetic factors, improper diet, excessive mental tension, poor psychological quality, etc., which may lead to the body’s reaction to the redness, swelling and hard lumps of the vaccine; 2. Vaccine factors: different biological products contained in different vaccines may contain substances that may easily cause allergy or side effects in the vaccine recipient, or there may be more additional substances, which may lead to the vaccine recipient’s easy appearance of redness, swelling or hard lumps around the eye of the needle. Redness, swelling or hard lumps may appear around the eye of the vaccine. For example, about 3 weeks after BCG vaccination, redness, swelling, hard lumps and even pustules may appear, and after 1-2 weeks of crusting and healing, scarring may be formed. 3. Other factors: Redness and hard lumps around the eye of the needle may also be related to skin diseases such as sebaceous cysts, or allergic reactions of the vaccine recipient to dust and animals, which can be easily confused with adverse reactions after vaccination. In addition, if the vaccination site is not cleaned and sanitized after vaccination, infection caused by bacterial invasion may also appear as redness, swelling and hard lumps around the eye of the needle. 2. Solution: If a vaccine recipient shows symptoms of redness, swelling and hard lumps around the eye of the needle after vaccination, the redness, swelling and hard lumps generally do not exceed 5 cm and can be classified as a transient adverse reaction. They can usually be observed for the time being and do not require special treatment. Dry hot compresses with a dry towel and routine disinfection with alcohol or iodophor can also be used, etc. If you continue to see no improvement or if the hard lumps are large in scope, and if other symptoms such as generalized fever appear, you can contact the vaccination site and ask whether you need to go to a medical institution for treatment. Precautions: The vaccinees should pay attention to not getting water around the eye of the needle as much as possible in daily life, pay attention to regular work and rest in daily life, and try not to stay up late and overwork. Avoid eating spicy and stimulating food, choose a light diet and eat more fresh vegetables and fruits.