Currently, local injection sclerotherapy and surgical excision are commonly used to treat cavernous hemangioma in infants and children, but these methods are less effective and have more side effects and tend to leave scars, which are not easily accepted by parents. High-frequency electrocoagulation for hemangioma treatment is effective and basically has no side effects, and better results can be obtained if the treatment is guided by color ultrasound. High-frequency electrodes are a purely physical treatment method, which means that no drugs will be introduced into the tumor, and it has a very significant effect on infants and children. With the addition of ultrasound positioning, the current, heat and high frequency electrocoagulation generated by the high-frequency electrode treatment instrument are applied to the affected area, thus gradually mechanizing and shrinking the diseased vascular tissue until it completely closes and disappears. The treatment technology does not damage the normal tissue cells, no destructive, after the cure the child will not leave traces, will not recur. The technique has exact efficacy and high cure rate. According to the form of tumor, different output power and discharge time are used for treatment. The skin mucosa is disinfected with tincture of iodine, local anesthesia with 2% lidocaine for adults and basic anesthesia plus local anesthesia for infants and children, the ultrasound probe is disinfected and precisely positioned to determine the form of hemangioma, the body surface of gentian violet accurately marks the range of tumor electrocoagulation point and determines the depth of electrocoagulation point. The needle is inserted safely at a certain angle to avoid large blood vessels and nerves, and the discharge is stopped before the needle is discharged to prevent burns to the skin or mucous membrane. The treatment directly acts on the tumor cell membrane and the elastic and collagen fibers in the perivascular tissues, generating high heat in the tumor body, causing emulsification, coagulation and contraction of the vessel wall, gradually shrinking the tumor body and losing the ability of re-expansion of the deformed vessels. This treatment technique does not damage normal tissue cells, is non-destructive and does not leave scars, and is useful for cavernous hemangioma, lymphatic capillary hemangioma, trapezoid hemangioma, and multiple lymphatic angiolipoma. After treatment, local pressure bandage is applied. The tumor can be cured at one time in general, and the giant tumor and multiple tumors can be cured by 2-3 treatments.