Pregnant women are advised to eat a balanced diet during pregnancy and generally do not need additional DHA supplementation. DHA is an acronym for docosahexaenoic acid. Moderate intake of DHA can promote the development of fetal nerve cells and has nutritional value. However, there is no consensus that pregnant women need to take additional DHA supplements, nor is there a clear conclusion on when they need to do so. Clinical advice is that pregnant women should eat a balanced diet and may not need to take additional DHA if dietary supplements can supplement their diet. It is recommended that pregnant women eat more fish or other aquatic products, i.e., the intake of fish or aquatic products should reach about 100 grams per day, three times or more per week. If the intake of DHA in the diet of pregnant women is insufficient, they should supplement DHA appropriately, and the specific recommendations should follow the doctor’s advice.