Rehydration salts for infants can be taken in two ways. They can be taken directly by mouth, or they can be added to the infant’s body through intravenous rehydration. Oral rehydration salts for infants are usually taken orally in conjunction with the infant’s condition to achieve therapeutic effects if the diarrhea is not very severe, preventing dehydration or mild dehydration. If the diarrhea is more severe and moderately severe dehydration, the effects and damage caused to the infant’s body are more serious, then it is necessary to use it through intravenous rehydration. The amount of rehydration salts should be diluted with 250 ml of lukewarm water, and the amount of solution needed should be correctly estimated according to the body weight and the degree of dehydration. The dosage for children needs to be consulted in detail with the doctor first. In clinical practice, it is usually diluted to a certain concentration, and should be taken in small amounts, drink more and take it slowly. It is recommended that before using the drug, you need to consult your doctor in detail according to the child’s own symptoms, and use the drug in a reasonable manner. It is not easy to heat when used in infants to prevent deterioration and affect the therapeutic effect.