There are general treatment, medication, surgery and other ways to eliminate scarring after a knee fall. 1. General treatment: early can use elastic bandage pressure, reduce scar formation, can also be used with laser treatment, promote collagen repair. 2. Drug treatment: local injection of glucocorticoid, such as trimethoprim and betamethasone, can inhibit scar formation, and can also be used externally to soften the scars with mucopolysaccharide polysulfate ointment. 3. Surgery: If the scar is large and affects the normal activities of the knee joint or has a high demand for aesthetics, surgery can be taken to remove the scar, together with radiotherapy, to prevent the scar from recurring. It is recommended to consult a doctor in time and under the guidance of a professional doctor for the treatment of knee scars.