For people who keep sitting or standing for a long time or walk outside all year round, when sitting and standing for a long time, because of the continuous muscle contraction and gravity, the venous reflux of lower limbs slows down and the superficial veins gradually fill up and become tortuous, which will easily lead to varicose veins in a long time. At first it is not painful, but if the disease continues to develop, a series of symptoms may appear, such as discomfort, itching, eczema, ulcers, bleeding, etc. On examination, superficial veins will be found to be like earthworms, with hyperpigmentation, desquamation, ankle edema, and pins and needles, numbness and burning sensation. Varicose veins are also related to physiological factors such as obesity and pregnancy. Obese people are prone to lower limb vein disease because of high blood lipids and increased blood viscosity, plus high weight makes venous blood flow back to the heart relatively difficult; pregnancy increases weight, the fetus and the enlarged uterus compress the pelvic and lower limb veins, increasing venous pressure in the legs, resulting in poor blood flow back, also prone to lower limb varicose veins. In addition, patients with abdominal surgery, malignant tumors, lower limb fractures, serious infections, and hemiplegia are also at high risk for lower limb varicose veins. Severe varicose veins require surgery, while for mild to moderate patients or those with a high incidence, wearing compression stockings can help treat and prevent varicose veins. Medical compression stockings help to promote the return of venous blood and lymphatic fluid to the heart, and the most important feature that distinguishes them from ordinary stockings is that they have a strong, even pressure gradient. After wearing these medical elastic stockings, the pressure decreases gradually from the ankle to the thigh, with the least pressure at the thigh. People with high incidence of varicose veins can use the external pressure exerted by the elastic stockings on their legs to fight the stagnation of blood in the lower limbs and restore the function of the venous valves, thus achieving the purpose of treatment. They can be divided into long (ankle to thigh) and short (ankle to knee) according to their shape. When purchasing, the size can be chosen according to the thickness of the leg. Therefore, for those who stand for a long time, such as teachers, traffic police, chefs, shoppers, doctors, nurses, etc., those who work for a long time sitting, such as drivers, civil servants and other office workers, pregnant women, people who travel a lot on airplanes, flight attendants, obese people, those who have suffered from lower limb venous disease but their condition has not yet reached the standard of surgery can try to wear a medical elastic stocking to make elastic compression at an early stage to prevent the condition from The compression can be done at an early stage to prevent the disease from worsening. If we blindly pursue high pressure, it is very likely that the local veins will be pressed closed, which will aggravate the poor blood return. It should be noted that elastic stockings should not be worn in the prone position, because blood flows back easily in the prone position, and wearing elastic stockings will further increase the burden on the heart. Furthermore, patients with skin allergies and arterial occlusions in the lower extremities are also not recommended to wear compression stockings. Medical compression stockings are best purchased in pharmacies or hospitals with a prescription after consulting a doctor to avoid side effects due to tightness and material maladjustment. Finally, it is recommended that workers who sit or squat for a long time frequently move their legs and backs of their feet, change their posture or move their ankles and toes. Patients who have been bedridden for a long time can move their ankle joints and with deep breathing to avoid blood flow stagnation or even the formation of venous thrombosis.