Pregnant women often take blood tests will not cause anemia because during pregnancy, the amount of blood that needs to be drawn during normal medical checkups, such as laboratory tests, is about 10-20 ml, and this amount of bleeding will not cause anemia in pregnant women. Since the body’s hematopoietic function is very well developed, when the body bleeds about 400ml, the blood can be replenished by the body’s hematopoietic system in a short period of time. The 10-20 ml of blood needed for the blood test is insignificant compared to 400 ml of blood, so pregnant women do not have to worry about anemia when they have their blood drawn for the test. However, pregnant women are prone to anemia during pregnancy, so they should pay attention to eating more iron-rich foods, such as red dates, animal liver and lean meat to supplement iron and prevent anemia during pregnancy.