A red streak of wandering superficial veins, known as wandering thrombophlebitis, is present in the superficial veins of the affected limb, which may fade after a few weeks. After some time they may appear again in a different or the same area, with pain and tenderness. It is one of the clinical manifestations of thrombophlebitis. The cause is mainly due to the patient’s lack of vital energy and the inability of the blood and Qi to reach the end of the blood vessels, resulting in the gradual necrosis of the fingers or toes due to lack of nutrition. The red streaks and wandering superficial veins are found in the lower extremities, often with sudden occurrence of streaks or mesh-like strips in one domain, with redness, swelling and pressure pain, sometimes able to be found in several parts of the body along with it. The clinical symptoms during the attack are not distinctly different from those of general thrombotic superficial phlebitis. Since the lesions are involved in small and medium-sized superficial veins, there is certainly thrombus obstruction in the lumen, but it does not lead to obstruction of venous blood return, and there is no swelling of the limbs. The systemic repercussions are relatively mild, with only mild fever in parts of the patient, and the attacks are intermittent, wandering and alternating throughout the body, with each attack lasting only 2-4 weeks, and then subsiding on its own. After a few weeks or years, superficial veins in other parts of the body can have the same attacks again, repeatedly and repeatedly. Because of the red streak, the wandering superficial vein is a separate disease with an unclear cause, or it may be an early manifestation of thrombo-occlusive vasculitis or visceral cancer, so the following diseases must be excluded before simple wandering superficial thrombophlebitis can be identified. If the lesion is confined to a vein, the early manifestation of thrombo-occlusive vasculitis will sooner or later lead to arterial lesions and limb ischemia and nutritional disorders. The pattern of wandering superficial thrombophlebitis is: first, a period of wandering superficial thrombophlebitis is followed by signs of limb ischemia; second, wandering superficial thrombophlebitis occurs in the early stages of thrombo-occlusive vasculitis and lasts for six months or years before it stops; third, wandering superficial thrombophlebitis occurs in the later stages of thrombo-occlusive vasculitis; fourth, in a few patients, wandering superficial thrombophlebitis occurs during the entire course of thrombo-occlusive vasculitis. Vasculitis has intermittent episodes of wandering superficial thrombophlebitis throughout the course of the development of vasculitis. 2.Wandering thrombotic superficial phlebitis arising from underlying visceral cancer is characterized by almost equal chance of occurrence in the upper extremities and trunk as in the lower extremities, mostly as small hard nodules, usually without inflammatory reactions such as redness and burning; the patient is older, has recent wasting, or has clinical manifestations specific to visceral cancer. 3. Wandering thrombophlebitis arising from SLE is characterized by multi-system clinical manifestations of the primary disease, such as skin, mucosal lesions, arthritis, pleurisy or pericarditis, kidney damage and epilepsy or psychiatric symptoms. Combined with blood and immunological examination can be determined. 4. Wandering superficial thrombophlebitis associated with leukoaraiosis is characterized by characteristic oro-ocular-vulvar lesions.