”With the aging of our population, there are more and more vascular diseases. Vascular diseases of the extremities other than cardiovascular and cerebrovascular, such as varicose veins of the lower extremities, deep vein thrombosis of the lower extremities, acute arterial embolism of the extremities, thrombo-occlusive vasculitis, diabetic cachexia, etc. are also receiving more and more attention. These are commonly known as “tendon pimples”, “vasculitis”, “diabetic foot”, “polio leg” and other difficult vascular diseases. With the improvement of diagnostic and surgical techniques, the treatment methods have also been greatly improved, especially the minimally invasive endovascular treatment has become the hot spot of people’s attention, among which holmium laser treatment of varicose veins in the lower extremities has been affirmed by vascular experts at home and abroad for its stable, safe, thorough, beautiful and fast features. Varicose veins in the lower extremities are a common clinical disease with a prevalence of about 20% in China, mainly manifesting as earthworm-like veins on the inner side of the lower leg, which are aggravated by standing or activity, and also cause soreness, cramping and pain in the leg belly, and local hyperpigmentation, itching, nodules and ulceration over time. After continuous research and exploration, vascular surgery experts at home and abroad have developed the latest method of fully minimally invasive treatment of varicose veins – Holmium laser treatment. In recent years, laser treatment of varicose veins in the lower extremities has been replacing the trend of traditional aspiration, which is divided into two types of lasers: holmium laser and semiconductor laser. The holmium laser is known as the “king of lasers” because its efficacy is much better than that of the diode laser. Holmium laser has a wavelength of 2.1 microns (0.81 microns to 0.94 microns for diode laser), a tissue penetration of 0.4 mm, a pulse duration of only 0.25 milliseconds, and a large adjustable power range. Holmium laser has the following advantages in the treatment of varicose veins in the lower extremities: 1, Holmium laser with a variety of models of thin fiber, suitable for different people intravenous intervention. 2. The light point at the head of the fiber can be seen through the skin, so that the fiber can be accurately positioned to reach the disease site. 3.The energy of holmium laser is continuously adjustable in a wide range, which is suitable for different patients with varicose veins. 4.The laser energy is concentrated, the pulse time is short, and the damage to the surrounding tissues is small. Holmium laser energy is mostly absorbed, scattered and reflected by the blood, so that the diseased veins can be coagulated and occluded. 6. In summary, holmium laser surgery is minimally invasive, safe, efficient, aesthetic, and thorough, and has been well received by patients since its clinical application. It is worth reminding that there are many causes of varicose veins in the lower extremities, such as deep vein thrombosis posterior migration, Buga’s syndrome, deep vein valve insufficiency, congenital vascular malformation, etc. Experts believe that before surgery, you should go to a regular hospital with a vascular surgery specialty to do the appropriate examination, and if there are any of these conditions, you should treat the original disease, and then apply holmium laser treatment according to the situation to achieve satisfactory clinical results.