People who always need to keep the same posture are prone to some occupational diseases. For example, people who need to stand for a long time, such as teachers and salespeople, are prone to varicose veins of lower limbs. Varicose socks use the elasticity of socks to reduce the accumulation of venous blood, thus reducing the pressure on the wall of venous blood vessels. Elastic socks are divided into three levels of pressure, the first level of low-pressure prevention and health care to prevent varicose veins; The first-class medium-pressure initial treatment type is suitable for patients with varicose veins in the early stage; Moderately treated type II hypertension is suitable for patients with varicose veins of lower limbs obviously accompanied by leg discomfort and postoperative varicose veins, while severely treated type III hypertension is suitable for patients with high swelling of lower limbs, ulcers, blackened and hardened skin, eczema and lymphedema.