Varicose veins in the lower extremities are superficial veins in the legs that are tortuous and dilated in the shape of “earthworms”. Occupational groups such as teachers, surgeons and nurses, traffic police, sentries, pregnant women and women who often wear high heels are at high risk of developing varicose veins in the lower extremities; in addition to long-term standing factors, varicose veins are also associated with overweight, prolonged sitting, estrogen and family genetics. If you understand the causes and triggers, you can try to avoid the risk factors and do some activities or measures to prevent varicose veins in lower limbs: (1) Avoid long standing or sitting posture; if you need to stand and sit for a long time because of work: you can do toe lifting, heel lifting or ankle joint movement, which can promote the contraction of calf muscles and use the pumping action of calf muscles to promote the return of venous blood to the heart, which can reduce the pressure of lower limbs. The pressure of the veins can be reduced to prevent varicose veins in the lower limbs. (2) When standing workers take a break from work, they can take off their shoes and elevate their feet when they are available, with their feet more than 30 centimeters above the heart; when they return home from work, they can lie down on the bed and put their feet on the wall to reach ninety degrees (the same as upside down) and elevate for more than 15 minutes, which can reduce the pressure of venous blood on the lower limbs and relieve the symptoms of lower limbs such as soreness and swelling and edema. (3) When conditions permit or after coming home from work, take off your shoes and walk barefoot or in loose slippers, which can improve blood circulation in the feet and make the foot muscles get exercise to prevent varicose veins. (4) Avoid wearing high heels for a long time, flat heels can help prevent varicose veins, and make sure to wear sports shoes with sponge pads or travel shoes during physical exercise, which are helpful to relieve pressure on legs and prevent varicose veins. (5) Correct some high-risk factors or bad habits: overweight people should control diet and increase exercise to reduce weight; constipated people should correct constipation by adjusting diet structure and taking laxatives if necessary to avoid increased pressure in the abdominal cavity; correct bad habits such as reading cell phone books and newspapers when going to the toilet, squatting for a long time will give cause increased venous pressure in the lower limbs. (6) For people in high position such as: teachers, surgeons nurses, traffic police, sentries, pregnant women, etc., can prevent varicose veins of lower limbs by wearing medical elastic stockings with pressure gradient. Lower limb varicose veins lying down and inverted posture to prevent varicose veins medical elastic stockings to prevent varicose veins