Usually, it is appropriate for pregnant women to supplement DHA in the fourth to fifth month of pregnancy, and care should be taken to supplement under the guidance of a doctor. In general, reasonable supplementation of DHA by pregnant women can help promote fetal brain development, because DHA can improve the composition of unsaturated fatty acids in fetal brain cone cells. At the same time, DHA can participate in the basic metabolism of the eye menstruation, maintenance, maintenance of the retina, so pregnant women supplementation of DHA is also beneficial to the development of the fetal retina, the growth and development of the fetus has certain benefits. In addition to the benefits to the fetus, reasonable supplementation of DHA to pregnant women to improve their own skin condition, reduce postpartum depression, etc. also have certain benefits. During pregnancy, pregnant women should ensure a balanced intake of nutrients, and supplement the body with vitamins, proteins, trace elements, etc. from food to meet the needs of the body and the fetus. Pregnant women are advised to follow the doctor’s instructions to supplement DHA, and not to use it on their own. Keep DHA in a safe place in your daily life and go to the doctor for obstetric examination on time to monitor the growth and development of the fetus.