Vaccination should be carried out when the baby is healthy, the baby’s immunity is also low when he has a slight cold, if the vaccine is given at this time, for fear of causing adverse reactions, it is best not to do it, but in the case of not using any medicine, and there is no symptom of fever can be given. Babies suffering from colds or other illnesses that cause fever cannot be vaccinated. If the vaccine is given at this time, due to the baby’s stress reaction, it will cause the baby’s temperature to rise, which will aggravate the condition and may also induce more illnesses. If the baby belongs to an allergic body, vaccination will make the vaccine more sensitizing, which will easily cause the baby to have an allergic reaction. If your baby only has a mild cold with a runny nose and sneezing, it will slowly improve after adding more clothes and drinking more water. Especially after vaccination, drink more water to promote excretion, eat some nutritious light diet to increase nutrition, regulate the indoor temperature, so that the baby does not get cold again, there will be no complications, and slowly will be fine. Parents should listen to the doctor’s words, cooperate with the doctor, and give the child vaccination under the appropriate circumstances, and must not be forced to vaccinate.