Pregnancy in hyperthyroidism can have very negative effects on the fetus. For example, it can cause miscarriage, premature birth, poor fetal growth, and growth deformities. However, hyperthyroidism can produce a healthy baby with proper treatment and control. For example, if hyperthyroidism is controlled by systematic treatment of hyperthyroidism with the help of a doctor, the medication can be stopped or maintained with the smallest dose of medication, and then pregnancy can be considered, the occurrence of adverse effects can be well controlled. However, if hyperthyroidism is found in the middle of pregnancy and you still choose to continue the pregnancy, you should seek the help of an endocrinologist for hyperthyroidism treatment or surgery in the middle of pregnancy. With good control of hyperthyroidism, the occurrence of adverse outcomes can be controlled.