Self-pay vaccines are also necessary, especially chickenpox vaccine, hand, foot and mouth disease vaccine, influenza vaccine and pneumococcal vaccine. These diseases have a high incidence during childhood, and diseases such as chickenpox, influenza, and hand, foot, and mouth disease are highly contagious, so if you do not get vaccinated you will become susceptible and increase the disease rate significantly. Pneumonia is a common infectious disease in infancy and early childhood, and children with pneumonia take longer to treat and can become immunocompromised, which can be life-threatening if it develops into severe pneumonia. Therefore, vaccination is effective in preventing the disease, reducing the incidence of the disease, relieving the child’s pain, and increasing the resistance to the disease.