In early pregnancy, if the embryo stops developing, the following symptoms will appear: 1. early pregnancy reaction disappears, no more nausea and vomiting, especially in the morning. 2. breasts no longer continue to grow but appear to shrink. 3. if the embryo stops developing in the uterus for about two weeks, there will be irregular vaginal bleeding and even pain in the lower abdomen. The pain in the lower abdomen may occur. These are the clinical symptoms of embryonic arrest in early pregnancy. It is recommended to go to the hospital for ultrasound examination as soon as the early pregnancy reaction disappears. If the fetal development is found to be unsatisfactory in the uterus, and if the clinical situation of blood HCG and progesterone test reveals the possibility of embryonic arrest, it is recommended to give timely treatment in the clinic.