Scar marks on the legs, and scarring left after healing from various injuries can be improved or removed by topical anti-scar medication, phototherapy, and so on. If the scar is just formed soon, it can be removed by topical anti-scar proliferation drugs, and common scar removal creams include compound heparin sodium allantoin gel, silicone gel, etc., which usually need to be used for 6-12 months, but the clinical effect is limited for the old scar. Phototherapy, especially fractional laser, has therapeutic effects on both nascent and old keloid scars. It is a technique that removes keloid scars through epidermal reconstruction of scar tissues, regeneration and remodeling of collagen tissues, and improvement of keloid scar color, and its effects can generally be maintained for a long period of time. For patients with keloid, abnormal liver and kidney function, significantly elevated blood glucose, localized infected lesions, recurrent facial acne, and recent UV exposure, it is prudent to undergo photoelectric treatment. If there is a need to improve the willingness to treat, it is recommended that patients go to a regular medical institution for an interview and follow the doctor’s instructions for treatment.