The redness and swelling of the eye of the needle after taking a bath after vaccination may be caused by the infection of the eye of the needle, pay attention to skin care, observe the systemic symptoms as well as anti-infection treatment. After taking a shower after vaccination, the redness and swelling of the eye of the needle suggests that the eye of the needle is infected, the patient needs to pay attention to the local skin care of the eye of the needle, to keep the local skin dry and clean, you can use iodophor and other sterile disinfectant solution to wipe the local redness and swelling. Patients can also follow the doctor’s instructions to use anti-infective drugs, such as levofloxacin tablets, etc., to control inflammation and promote recovery. If the local skin is simply red and swollen, there is no need to worry too much. In addition to the local symptoms, patients should pay attention to observe whether the local skin redness and swelling have worsened, as well as whether there are systemic symptoms, such as fever, chills, chills, more than one cry, mental depression and so on. It is recommended that patients with pinhole infections seek prompt medical attention to assess their condition and treat them under the guidance of a physician.