In clinical practice, the majority of cases of swollen lower limbs or feet begin to appear around the sixth month of pregnancy. It is recommended that in addition to rest, it is also recommended to elevate both lower limbs at night when sleeping to promote blood circulation, and the edema will basically disappear the next day, and it is normal for edema to appear again during the day when standing more. We hope to clinically exclude hypertension or urine protein, so we need to monitor blood pressure to understand whether blood pressure is increased and to understand whether there is urine protein. If this occurs, it is likely to be clinically caused by hypertension and it is recommended to give appropriate intervention.