Foam sclerotherapy for varicose veins is reliable and safe. Foam sclerotherapy for varicose veins is performed by puncturing the varicose vein under local anesthesia and injecting the prepared foam sclerosant into the lumen of the vein, destroying the vascular endothelial cells, causing aseptic inflammation of the blood vessel wall, and ultimately forming dense fibrous strips to cure the varicose veins. This method is simple, safe, reliable, repeatable and can completely cure varicose veins in case of 2-3 injections. Treatment of varicose veins of the lower extremities with foam sclerotherapy is less invasive. On the one hand, the method reduces the amount of medication applied thereby reducing the complication rate. On the other hand, the use of bubbles increases the contact area of the drug and thus enhances the therapeutic effect. However, this method may lead to superficial thrombophlebitis and patients may experience discomfort such as skin redness, swelling, pain, and abnormal sensation. If you are a patient with varicose veins, it is recommended to go to a regular hospital and receive consultation and treatment from a specialist to avoid delays.