Sclerofibromatosis, also known as invasive fibromatosis, is a type of soft tissue tumor with distinctive features. Although it does not generally metastasize, it is prone to recurrence after local excision, and it tends to grow invasively along the surgical wound. At the same time, the tumor has no significant efficacy to radiotherapy and chemotherapy, and if the tumor receives high-dose radiotherapy locally, it will lead to the loss of surgical opportunity after subsequent recurrence. Therefore, clinically such patients often undergo multiple surgeries, which are very traumatic and have a high recurrence rate. Ultrasound ablation technology (Helioplasty) shows unique advantages in the treatment of hard fibromatosis because: 1. High-intensity ultrasound has good thermal effect in the hard fibromatosis lesion, and the treatment requires low dose, good ablation effect and high safety. 2. Non-invasive treatment, less trauma, no incision, no destruction of the natural interstitial barrier in the body, no acceleration of lesion invasion and recurrence even if the ablation is not complete. 3. Conformal ablation is conducive to the complete ablation of irregular lesions, and can be performed in a wide range of ablation under the premise of safety. 4. Except for children, most of the treatments can be completed under non-anesthesia, which is conducive to the protection of nerves and blood vessels around the lesions and also facilitates recovery. Ultrasound ablation (HEF) can be applied in the treatment of hard fibromatosis, which can obtain very good results, and mostly treats difficult patients who have recurrence after surgery and are difficult to operate again, and has better effect on the first treatment cases, showing obvious advantages.