Whether or not the third booster shot of the new coronavirus vaccine should be given needs to be determined based on the patient’s condition. If the new coronavirus vaccine that the patient has already received is a three-shot system, there is usually no need to receive the third booster shot. However, if the new coronavirus vaccine that the patient has already received is a two-shot system, it is recommended that the patient receive the third booster shot in time. Patients are advised to adjust their diets in time after receiving the new coronavirus vaccine, and to eat less spicy and stimulating foods, such as chili peppers, peppercorns, and garlic. Patients should avoid touching water at the vaccination site after vaccination to prevent pain, redness, swelling and other infections. The third injection of the new coronavirus vaccine is not mandatory, and it is recommended that patients should take good personal protection when receiving the vaccine.