Nail damage, want to promote its growth and repair, first should be clear about the cause of damage, the cause of nail damage may be infected with fungus or trauma, such as due to infection of fungus, can be used antifungal drugs, including ketoconazole cream, miconazole nitrate cream, etc.; such as due to trauma, can be used to activate blood circulation and eliminate blood stasis medication, including activate blood circulation and stop the pain of the cream, activate the oil and so on. 1. Antifungal drugs: If the nail is damaged due to fungal infection, some topical antifungal drugs, such as ketoconazole cream, miconazole nitrate cream, etc., can be used to promote the growth and repair of nails. 2. Activate blood circulation and eliminate blood stasis: If the nail is damaged due to trauma, you can use some topical activate blood circulation and eliminate blood stasis medicines, such as activate blood circulation and relieve pain, activate oil, etc., to smooth the blood circulation and promote the growth and repair of nails. If the symptoms of nail damage are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner, to identify the cause and give targeted treatment to avoid delaying the condition.