Chronic venous insufficiency (CVI) of the lower extremities is a clinical syndrome caused by a variety of complex factors such as abnormal blood rheology and poor microcirculation, resulting in impaired centripetal return of peripheral venous blood, including varicose veins of the lower extremities, primary deep venous valve insufficiency, and deep vein thrombosis of the lower extremities. The incidence of this disease is about 15-20%, accounting for 70% of all lower extremity venous diseases, with superficial varicose veins, lower extremity edema, pain, skin pigmentation changes and even ulcer formation as the main manifestations, seriously affecting the quality of life of patients. At present, the integrated surgical treatment with drugs and physical therapy is the main way to treat CVI. Because of the invasive nature of surgical treatment, many patients are unwilling to accept it, so conservative treatment is still one of the most important means of treating CVI. The treatment of CVI patients with Liu Guobin’s self-invented “non-invasive meridian gong” is not only effective, but also safe, convenient and easy to promote, which has positive social and economic significance. Pathophysiology of CVI: ① Damage to muscle and joint pumps. Muscle and articular pump is the power structure of lower limb venous return, and the joint pump includes the movement of all joints from foot to hip, especially the ankle joint. The muscle pump includes all groups of muscles above and below the knee, and the calf muscle pump is the most important, which acts as a suction pump for superficial veins and a pressure pump for deep veins. It provides more than 30% of the energy required for venous reflux in the lower limbs. Therefore, the damage of myo-articular pump can directly affect the normal circulation of lower limb veins. Venous valve insufficiency. There are many theories that cause venous valve closure insufficiency, but they can be summarized as abnormalities of the valve and vein wall structure. The structural abnormalities of valves include congenital small valves or valve defects; secondary valve damage; and valve-lumen mismatch due to primary deep venous valve insufficiency. In the latter, venous reflux often begins in the cleft of the free edge of the valve, and as the disease progresses, the valve thins, elongates, tears, and eventually thickens and atrophies may occur. The main manifestations of structural abnormalities of the venous wall are abnormal collagen fibers of the varicose vein wall and enlargement of the venous lumen. In patients with CVI, the capillary circulation is usually inadequate, resulting in skin changes, eczema, and ulcers. These changes are associated with high microcirculatory blood flow, and capillary thrombosis leads to reduced skin nutrition and transcutaneous oxygen partial pressure, making the patient susceptible to ulcers. Western medical treatment of CVI includes: (1) compression therapy (including compression bandages and compression stockings), which is the basic treatment for CVI; (2) pharmacotherapy, venoactive drugs (VADs) VADs are the first-line drugs for the treatment of symptoms and edema associated with CVI, and are available for any stage of CVI; (3) sclerotherapy, liquid sclerotherapy can be used to treat C1 and C2 grade CVI, but the 10-year relapse rate can be as high as 90%. Foam sclerotherapy can be used to treat C2 to C6 grade CVI, with a clinical efficiency of more than 80% over 5 years; ④ surgical treatment, there is no recommended grade, but patients with deep venous reflux are considered for surgical treatment only if they have the following indications: C4b to C5-C6, Kistner grade 3-4 reflux, venous filling time <12 s, and venous pressure difference between resting pressure and after exercise <40%. According to Chinese medicine, this disease belongs to the category of vein paralysis and edema in Chinese medicine, which is mostly caused by congenital deficiency of endowment, coupled with acquired long standing and sitting, heavy exertion, cold and pregnancy, etc. It also occurs due to thrombosis and trauma damage to the venous valves. "The disease is blamed on the internal organs and is based on the deficiency of spleen qi and, in severe cases, on the deficiency of kidney qi and liver yin. The spleen is responsible for transporting water and dampness, and the kidney is responsible for water. If the spleen and kidney are deficient, water and fluid are not distributed, dampness overflows, and dampness tends to go down, so edema of the lower extremities occurs; spleen qi is deficient, clear yang does not rise, and dampness gathers in the lower part of the leg, so the lower leg becomes swollen, heavy, and even swollen and painful; the flow of qi is unfavorable, and dampness is obstructed, so blood flow is not smooth, and stasis accumulates in the lower part of the body. The disease is characterized by itching, pigmentation, and even ulcers. Therefore, the disease is located in the tendons and veins, and the pathogenesis is closely related to "dampness" and "blood stasis". The treatment is mostly based on benefiting Qi, promoting dampness and invigorating blood. According to the theory of meridians, meridians go up to the top and down to the feet, reaching the skin outside and the internal organs, with the function of infiltration of blood, mutual penetration of fluids and blood, and penetration of the Ying and Wei; pathologically speaking, if the meridians do not work, there will be disharmony of Qi and blood, fluid and Wei, resulting in swelling, numbness, weakness and even pain and ulcers in the limbs; therefore, if the treatment of meridians is regulated, the Qi and blood will be smooth, the Ying and Wei will be harmonized, and all diseases will be cured and the body will be healthy. Liu Guobin's "non-invasive meridian work" is to follow the path of meridians (foot Taiyin Spleen meridian, foot Yangming Stomach meridian, foot Shaoyang Gallbladder meridian) and apply pressure and rubbing on specific points (Qihai, Foot Sanli, Yongquan, Sanyinjiao, Bafeng, etc.) to effectively bring into play the viscosity of blood and the heart pump (transfer of kinetic energy by contraction and diastole of heart muscles) and respiratory pump (deep breathing to create negative pressure in the chest cavity to form the blood pressure). The rhythmical effects of the blood viscosity and the heart pump (contraction and diastole of the heart muscles transfer kinetic energy), the respiratory pump (deep breathing creates negative pressure in the chest cavity to form a parallelepiped), and the muscle pump (contraction and diastole of the muscle groups of the lower limbs squeeze the venous valves), achieve the purpose of repairing the atrophied, collapsed and contracted venous valves and improving venous return. Clinical manifestations Classification Clinical signs C0 Symptomatic without venous signs (e.g. heavy legs, weakness, soreness or pain) C1 Capillary dilation, reticular veins C2 Superficial varicose veins C3 Venous edema C4 Skin changes: ( pigmentation, eczema, lipid scleroderma, white atrophy) C5 Skin changes plus healed ulcers C6 Skin changes plus active ulcers "Non-invasive meridian gong treatment for chronic venous insufficiency of lower limbs" is a new treatment technology introduced by the Acupuncture and Massage Department of Jiading District Hospital of Traditional Chinese Medicine from Shanghai Shuguang Hospital, which is a green therapy. At specific acupuncture points (Qihai, Sansanli, Sanyinjiao, Bafeng, Yongquan), we use the viscosity of blood and the rhythm of the "three pumps" to apply pressure, rub, rotate, flex and stretch to repair atrophied, collapsed and contracted venous valves and improve venous reflux. This clinical study aims to verify the effectiveness, safety and compliance of "non-invasive meridian gong" in the treatment of chronic venous insufficiency of the lower extremities, and to improve the standard procedure of "non-invasive meridian gong" in order to expand its clinical application in the primary level. The study was conducted by the Department of Acupuncture and Rehabilitation of Jiading District Hospital of Traditional Chinese Medicine with a strict clinical design according to statistical requirements. As the first 50 subjects, you will be invited to participate in this clinical study with full exemption of treatment fee and 50% discount on lower extremity venous ultrasound examination fee before and after treatment (applicable: 2 examinations all done until the end of treatment with the invoice of payment or its valid copy to our department for settlement), and the physician will teach the technique and you can treat yourself at home after learning it. This trial is an own before and after controlled clinical study for three months, once a day, five times a week. During the course of treatment, you will be followed up with regular check-ups and changes in symptoms will be recorded. Your participation in this study is completely voluntary and your right to decide to withdraw from this study at any time will not affect your treatment by your doctor in any way. Your rights will be fully protected. The physician and the study unit will make every effort to avoid any inconvenience that may be caused to you as a result of this study. All information from this study will be confidential and no personal information about you will appear in the summary report or published literature. Chronic venous insufficiency of the lower extremities is a clinical condition characterized by superficial varicose veins, lower extremity edema, lower extremity heaviness, pain, nocturnal calf spasms, swollen legs, skin pigmentation changes and even ulcer formation, which can lead to secondary and direct complications such as varicose veins, venous thrombosis, phlebitis, hyperpigmentation, old rotten feet (pollicization), etc. It is very harmful and seriously affects the quality of life of patients. Currently, the main treatment for this disease is a combination of drug and physical surgery. Because of the invasive nature of surgical treatment, many patients are reluctant to accept it, therefore, we introduce a green therapy - "non-invasive meridian gong treatment for chronic venous insufficiency of lower limbs". The first 50 patients who meet the following conditions will enjoy three months of free treatment. (1) Western medicine diagnosis of chronic venous insufficiency of the lower limbs, Chinese medicine diagnosis of edema sore, and signed informed consent; (2) age 18 to 85 years old male or female; (3) advanced age or with other diseases inappropriate or unwilling to surgical treatment; (4) drug treatment effect is not obvious, or with liver and kidney function damage, etc. can not be long-term large amounts of drugs; (5) early lesions, the disease is mild, belong to C0 C C4 level. The Department of Acupuncture, Moxibustion, Tuina and Rehabilitation has the final right to interpret the above contents.