The recommended vaccines that must be vaccinated include: rotavirus vaccine, chickenpox live attenuated vaccine, pneumonia vaccine, influenza vaccine, hand, foot and mouth disease vaccine and other self-funded vaccines. 1. Rotavirus vaccine: The main purpose is to prevent rotavirus enteritis and is recommended for children aged 2 months to 3 years. Common adverse reactions include occasional symptoms such as low-grade fever, lack of appetite and decreased mental vitality for about 5 days after the first dose of vaccination, only mild fever for the second dose, and rare adverse reactions for the third dose. 2. Live attenuated varicella vaccine: It is suitable for the prevention of varicella in young children above 12 months of age and healthy people. Usually 1 dose for 12 months to 12 years old and 2 doses for 13 years old and above, with an interval of about 6 to 10 weeks. 3. Pneumonia vaccine: to prevent pneumonia caused by pneumococcus, 7-valent conjugate vaccine is mainly used for children under 2 years old. 23-valent pneumococcal polysaccharide vaccine is used for children over 2 years old and healthy people, the adverse reactions mainly manifested as redness and swelling at the vaccination site which can be cured by itself, fever, and occasionally low-grade fever, weakness, arthralgia, skin rash, etc. The vaccine is mainly used for children over 2 years old and healthy people. 4. Influenza vaccine: mainly for the prevention of influenza, referred to as influenza, applicable to children under 5 years of age, adults can also be vaccinated. The main adverse reactions include pain at the vaccination site, generalized fever and so on. 5. Hand, Foot and Mouth Disease Vaccine: Hand, foot and mouth disease is a common infectious disease among children, and intestinal viral infections are common. It is recommended that the starting age of vaccination is 6-10 months old, and children between 6 months old and 5 years old should be vaccinated as early as possible. Especially for the prevention of severe hand, foot and mouth disease.