Swollen hands and feet after pregnancy is a normal physiological phenomenon for most of the population, while a few edema is caused by pathological factors, such as high blood pressure in pregnancy and kidney disease in pregnancy. 1. Physiological edema. Often occurs in the second trimester of pregnancy, with the uterus increasing in size and compressing the inferior vena cava, estrogen and progesterone rising in the body, blood volume increasing in the body, and protein consuming in large quantities, etc. These factors will affect the blood reflux, reduce the discharge of water and sodium ions, etc., and therefore lead to the body to appear edematous manifestations. 2. Pathological edema. It is mainly related to hypertension in pregnancy, kidney disease in pregnancy, heart failure in pregnancy, cardiac insufficiency in pregnancy, lower extremity venous thrombosis, hypothyroidism, severe malnutrition, etc. Pathological edema is more likely to occur if there is severe edema, unilateral edema, accompanied by dizziness and headache. It is recommended that people with abnormal edema after pregnancy should consult a doctor in time to clarify the cause of the disease and carry out regular treatment.