The causes of lower limb edema in women may include diabetic nephropathy, cirrhosis of the liver, and edema in late pregnancy. 1. Diabetic nephropathy: If you suffer from diabetic nephropathy, there is usually a large amount of proteinuria, proteinuria leakage caused by plasma colloid osmolality decreased, capillary permeability increased, the circulating water will enter the tissue space, which can lead to edema of the lower limbs of women. 2. Cirrhosis: if a woman has cirrhosis ascites, ascites is more due to increased abdominal pressure resulting in obstruction of venous blood return to the lower extremities, can also cause venous stasis in the lower extremities leading to the occurrence of edema. 3. Late pregnancy: the uterus grows with the growth of the baby in the late pregnancy, which will increase the pressure of the pelvis and compress the inferior vena cava, causing obstruction of venous return to the lower limbs, and the circulation of the lower limbs will be affected and circulatory disorders will occur, resulting in oedema, which is mostly physiological, and can be restored to normal after the end of the pregnancy. The above are the common causes of lower limb edema in women, and it is recommended that when there are unexplained local edema, pain, skin changes, etc., you should go to the hospital in time to find out the cause of the problem and follow the doctor’s instructions for systematic treatment.