In the middle and late stages of pregnancy, because the uterus enlarges especially, it compresses the iliac vessels and the venous return of the lower limb vessels, and it is easy to have edema in the ankle joints and feet of the lower limbs, especially in the afternoon or evening, which is a normal phenomenon. You can soak your feet in hot water at night to accelerate blood circulation in the lower limbs and promote the edema to subside. You can elevate your lower limbs or put soft pillows or quilts under your feet when you sleep at night to facilitate venous return. Of course, it is necessary to exclude hypertension during pregnancy, because hypertension can also lead to lower limb edema and proteinuria, and it is necessary to monitor the patient’s blood pressure to avoid pre-eclampsia or eclampsia.