Pregnant women can receive infusion, but the drugs used for infusion need to be used under the guidance of a doctor. Usually, the reasons for infusion are as follows: 1. Supplementary nutrition: Some pregnant women cannot eat due to severe vomiting and other symptoms in early pregnancy due to pregnancy reaction. In order to ensure the health of mother and child, infusion can be used to replenish body energy under the guidance of doctors; 2, treatment of diseases: if pregnant women need to use medication during pregnancy due to illness. You can also use infusion under the guidance of a doctor and choose to use some drugs that have less impact on the fetus. If the drug will affect the fetus, you need to communicate with your doctor in time to determine the treatment plan. If a pregnant woman is having an infusion without knowing that she is pregnant, she needs to be evaluated by her doctor to see if the medication she is using will affect the fetus. Close monitoring of pregnancy tests, including blood draws and ultrasound, is required. Among them, ultrasound can rule out most fetal developmental abnormalities. However, if nothing is found throughout the pregnancy checkups, there is no need to worry too much and the pregnancy can continue. Under normal circumstances, pregnant women should try not to use any medication during pregnancy. The medication used by pregnant women can directly affect the fetus in the womb through the placental barrier, so they should try to avoid using medication without clear guidelines from their doctors. It is best not to use medication in the first trimester because the first trimester is a critical period for the formation of the fetus and the use of medication during this period may have certain effects on the fetus.