The care of lower extremity vein thrombosis is a very important thing. First of all, lower limb vein thrombosis will appear leg swelling, often some patients’ family members will massage the patient’s legs, which is a very undesirable way, because in the process of massage, the thrombus may be squeezed off and enter the pulmonary artery with the flow of blood, which forms pulmonary tethering. So the lower limb vein thrombosis must be braked, do not move, do not massage, and do not apply heat, but elevate the affected limb above the trunk position, which is conducive to swelling, and let the patient move the ankle joint ankle, let him do the flexion and extension of the foot, which is conducive to swelling.