Edema of the calves during pregnancy may be a normal phenomenon caused by the increase in blood volume, it is recommended that appropriate massage, pay attention to the dress code. It may also be caused by varicose veins of the lower limbs, hypertension during pregnancy and other diseases, which can be eliminated by general measures of conditioning, medication, surgery and other measures. 1. Increased blood volume: Pregnant women will have increased blood volume during pregnancy, so pregnant women will have the performance of edema of the lower legs, which is a normal physiological phenomenon. It is recommended that pregnant women should massage the edematous legs properly, which can promote the edema to subside, and also need to pay attention to the clothing, it is recommended to wear loose clothing and shoes to avoid aggravating the symptoms. 2. Varicose veins of the lower extremities: For lower extremity varicose veins caused by edema of the lower legs during pregnancy, the patient should ensure adequate rest, avoid standing in the same position at the same time, and can be appropriate for hooking the feet, which can promote the return of blood to the lower extremities. Patients should also control their weight and should not be overweight. 3. Hypertension in pregnancy: Hypertension in pregnancy can also lead to edema of the calves during pregnancy, if the patient has a systolic blood pressure ≥ 150mmHg, diastolic blood pressure ≥ 100mmHg, it is necessary to timely treatment. Oral labetalol and nifedipine extended-release tablets are prescribed to lower blood pressure, and antispasmodic, protein supplementation and appropriate diuretic treatment are given when necessary. If medication is ineffective, the pregnancy needs to be terminated. When the symptoms of calf edema occur during pregnancy, if it is a normal phenomenon caused by increased blood volume, no special treatment is needed. If it is caused by a disease, you should consult a doctor in time and follow the doctor’s instructions.