Swollen feet in women may be a precursor of the following diseases: First, deep vein thrombosis or varicose veins in the lower extremities: both can lead to swollen feet in female patients and can be accompanied by weakness in the lower extremities, and vascular lesions can be detected through ultrasound. Secondly, severe heart failure or renal insufficiency: Patients will show foot swelling, but usually there is no foot pain, patients also have chest tightness, panic, lumbar pain, and the diagnosis can be confirmed through ultrasound examination and blood test. Third, lower limb fracture: such as calf fracture or thigh fracture, will mostly affect the blood circulation of the lower limbs, resulting in swelling of the feet. Therefore, female patients with swollen feet should clarify the cause of the disease and carry out treatment according to the cause to be able to completely relieve the clinical symptoms of swollen feet.