Drinking alcohol the day after the administration of the Nine-valent Vaccine may cause discomfort indistinguishable from an adverse reaction to vaccination, irritation of the gastric mucosa, and the development of alcohol allergy. Drinking alcohol is usually not recommended. 1. It is difficult to distinguish the discomfort from the adverse reaction of vaccination: some women will cause low fever, fatigue, redness, swelling and pain at the vaccination site and other adverse reactions after taking the vaccine. Alcohol is a stimulant drink, which can easily cause weakness, dizziness and other discomforts, and it is not easy to distinguish these discomforts from the adverse reactions of the vaccine, which affects the assessment of the safety of the vaccine. 2. Stimulation of gastric mucosa: Drinking alcohol on the second day after the nine-valent vaccine is administered may cause some stimulation of the gastric mucosa. Drinking too much alcohol may cause gastrointestinal reactions such as nausea and vomiting. 3. Alcohol allergy: some women are weaker after taking the vaccine, and if they drink alcohol on the second day after taking the vaccine, they are prone to alcohol allergy, which can cause allergic symptoms such as redness, swelling and itching of the skin. If you are not feeling well, it is recommended that you go to the hospital in time and follow the doctor’s instructions for treatment.