The causes of leg swelling in women are commonly found in lower limb vascular lesions and muscle strain, as follows: First, lower limb vascular lesions: such as varicose veins and deep vein thrombosis, all of which will manifest as leg swelling and pain symptoms. Patients will have obvious deep and superficial venous dilatation, and the location and severity of the lesion can be found through ultrasound examination, which will cause calf pain when pressing the calf. Second, muscle strain: prolonged standing work will lead to leg swelling and pain symptoms, standing for too long can cause venous reflux obstruction, the calf is prone to venous stasis, the patient will have obvious leg swelling and pain. These are the common causes of female leg swelling, after timely treatment can gradually relieve the symptoms, patients should usually strengthen the leg muscle strength training, improve the leg muscle blood circulation to prevent symptoms.