Progressive Hemifacial atrophy (PHA) is a disease characterized by unilateral atrophy of skin, subcutaneous tissue and bone tissue, mainly manifesting as unilateral facial skin thinning, cheek and temporal depression, short nasal wings, weak red lips, atrophy of cheekbones and jaws, and missing teeth. When the eyes are involved, the lesions can lead to sunken eyeballs, reduced vision or blindness; hair loss, including eyebrows, eyelashes and beard, and significant bilateral facial asymmetry, or in severe cases, a unilateral “skeleton”-like appearance. The disease, also known as Parry-Romberg disease, was first reported by Parry in 1825 and described in detail by Romberg in 1846, so it was named after both of them. PFHA) as a name. Since the etiology of PHA is unknown, there is no way to treat the etiology, and the main goal of plastic repair is to fill in the tissue and restore symmetry. For moderate to severe PHA, traditional treatment methods include free or tipped flaps, myocutaneous flaps, fascial fat flaps, and free dermal fat flaps combined with bone tissue scaffold material implantation for repair. In recent years, our center has adopted advanced autologous fat free grafting combined with medpor scaffold tissue filling technology to repair progressive hemifacial atrophy deformity, which is safe, less traumatic, fast recovery, and has good clinical efficacy.