Scarring on the left index finger is considered to be related to localized trauma and scarring. It can be treated with topical medication, local injection or surgical excision if necessary. 1. Medication: If the scar on the finger is formed for a relatively short period of time, topical medication can be given, such as Mucopolysaccharides Polysulfate Cream and Allantoin Compound Heparin Sodium Gel, which can inhibit and soften the scar. 2. Local injection: scar formation time is longer, such as old scars, it is recommended to go to the regular hospital dermatology, such as hyperplastic scars can be injected into the lesions of glucocorticoids, such as trimethoprim, betamethasone, etc., which can make the scars atrophy. 3. Surgery: If the scar cannot be improved by the above treatment, it can be removed by surgery if necessary, together with radiotherapy. If scars appear on the fingers, if the symptoms are mild and will not affect your life, usually no special treatment is needed. If it causes obvious impact, it is recommended to go to the general surgery department of the hospital, combined with the doctor’s advice for treatment.