Pregnant women lying in bed every day may lead to excessive weight gain of the fetus. In general, pregnant women are advised to take appropriate activities to improve the metabolic efficiency of the body and promote blood circulation in the body, thus making the fetus healthier. If there is no special reason for a pregnant woman to lie in bed every day, it is easy to reduce the metabolic efficiency of the body, leading to fetal weight gain, thus increasing the chances of difficult labor, which may trigger the birth of the fetus such as hypoxia. It is recommended that under normal circumstances, pregnant women should not lie in bed all the time without any activity, but if it is for reasons such as preserving the fetus, adequate rest can be considered. Pregnant women are advised to go to the hospital for regular medical checkups to detect any discomfort in time and make reasonable interventions under the guidance of the doctor.