Vitamin C does not usually have a therapeutic effect on gum recession; vitamin C can be used to prevent scurvy, and treatment of gum recession requires removal of the local irritant and membrane gingival surgery, as described below. Vitamin C, chemically known as L-ascorbic acid, is used for the prevention of scurvy and as an adjunct to the treatment of various acute and chronic infectious diseases and purpura. Its contraindications are not clear, adverse reactions include scurvy caused by discontinuation of the drug after prolonged use, and prolonged use of the drug causes urate, cysteine salts, oxalate stones, and so on. The drug should be used under the guidance of a doctor. The treatment of gum recession requires removing plaque and tartar from above and below the gingiva through scaling and scraping, treating inflammation of the gums, and correcting bad brushing habits and removing irritating factors such as bad restorations. Afterwards, the gum profile can be corrected by membrane gingival surgery to cover the exposed root surface. It is recommended to visit a hospital for specialized treatment.