How much the body temperature drops in early pregnancy can’t determine whether the fetus stops, it needs to be judged in the context of the specific situation. During pregnancy, due to hormonal changes in the body, the body temperature of pregnant women may rise. Under normal circumstances, the body temperature of pregnant women will be 0.3-0.5℃ higher than normal, but each pregnant woman’s physical condition is different, and her body quality is different, so the changes in the body temperature of pregnant women are not the same. If there is an obvious drop in body temperature, and at the same time nausea and vomiting and other symptoms gradually reduced or disappeared, suspecting that there is a possibility of fetal arrest, it is recommended to go to the hospital in a timely manner for ultrasound, blood HCG test, progesterone test, to learn about the development of the fetus, to determine the presence of abnormal development and other symptoms. If there is fetal arrest, it is recommended to seek medical treatment in time.