There is no specific time limit on how long vaccinations can be postponed, but it depends on the type of vaccination given and the child’s physical condition. If there are special circumstances that require postponement, it is important to keep the postponement time as short as possible. If the child is completely healthy and has no symptoms such as cold and fever, the best time to postpone the vaccination is within a week for continuous vaccination and half a month to a month for discontinuous vaccination. However, if the child has symptoms such as fever, diarrhea or obvious eczema, there is a higher potential risk of getting the vaccination before the symptoms disappear. In short, for children who have postponed their immunization, there is basically no impact on their health as long as the interval between supplemental immunizations is appropriate and reasonable. In addition, children are advised to eat more fruits and vegetables, drink more warm water, take rest, and refrain from eating spicy and stimulating foods.