In general, healthy infants with a normal diet usually do not need additional DHA supplementation. For infants who are born prematurely or whose development is lagging behind, DHA can be supplemented appropriately in accordance with medical advice. DHA is an important nutrient for the intellectual development of infants, and it is also an important substance for neural development and retinal development. Therefore, infants need a sufficient amount of DHA to meet the growth and development needs of the body. In general, healthy infants with normal milk intake or infants who have added complementary foods that are well-balanced, there is usually no need for additional DHA supplementation. If the infant is breastfed, the mother can eat more deep-sea fish to increase the content of DHA in breast milk. If the gestational age of the baby is especially small, premature or developmental backward infants, after consulting the doctor, there is a need for DHA supplementation, under the guidance of the doctor, additional DHA supplementation, the specific use of dosage should follow the doctor’s instructions.