Subcutaneous tissue sclerosis is the clinical manifestation caused by simple varicose veins of lower extremities, which is generally not serious, mainly manifested by sinuous expansion and tortuosity of superficial veins of lower extremities, if the disease continues to progress, to the late stage, especially when the traffic vein valves are destroyed, mild swelling and nutritional changes of skin in the foot and boot area may occur, including skin atrophy, desquamation, pruritus, hyperpigmentation, skin and subcutaneous tissue sclerosis, even eczema and ulcers formation. Prevention mainly has the following aspects: 1.More occur in people who are persistently engaged in standing work or physical labor; 2.Where there is a family history of simple varicose veins, most of them develop soon after puberty, so in childhood and adolescence, appropriate physical exercise should be carried out to strengthen the venous walls under the condition of enhancing the whole body fitness; 3.The measures to protect the superficial veins are (1)Long-term engaged in standing work or strong physical labor (2) those who are engaged in standing work for a long time should walk frequently and do more ankle extension and flexion activities to reduce the pressure in the superficial vein; (3) improve the labor conditions and reduce the labor intensity. 4.Post-operative attention should be paid to: (1)Wear elastic stockings or elastic bandages during labor or activities to prevent trauma. (2) The affected limb should be elevated for a moment after 1 hour of labor or activity to promote venous reflux, reduce pressure in varicose veins and prevent rupture and bleeding. (3) The affected limb should be elevated slightly above the heart level for 7-10 days after surgery. (4)The incision should be covered with dressing and local pressure bandage if the blood leakage is serious. (5) Braking for 24 hours after surgery, with compression bandage, and gradually relax the next day, while carrying out foot and toe activities. (6) Keep the wound dressing clean and dry. (7) Use antibiotics and hemostatic drugs as prescribed by the doctor and observe their effects.