Anemia during pregnancy may be caused by iron deficiency anemia, megaloblastic anemia, thalassemia, etc. It needs to be treated by adjusting diet, taking medication (e.g. ferrous sulfate) and blood transfusion. 1. Iron deficiency anemia: Pregnant women need to eat more iron-rich foods, such as spinach, celery, lettuce and other vegetables, as well as soybean products, lean meat, pork liver and other foods, to replenish raw materials for blood production. You can also use medication, such as ferrous sulfate, which can replenish iron and thus correct anemia. When the symptoms are severe, blood transfusion can be considered. 2. Megaloblastic anemia: Pregnant women need to supplement folic acid and vitamin B12, and eat more fresh vegetables and fruits to promote blood production. 3. Thalassemia: at this time the use of iron supplementation and other treatments are ineffective, it is a hereditary disease, serious cases need blood transfusion treatment, but also need to carry out genetic testing. If pregnant women with anemia, it is recommended to seek timely medical treatment, under the guidance of the doctor for standardized treatment, to avoid unauthorized use of drugs.