Vitamin C is not very effective in treating gum recession. Vitamin C can mainly treat bleeding gums, and generally refers to vitamin C deficiency gum bleeding, which is also known as scurvy, because seafarers who work in the sea for a long time cannot eat fresh vegetables and cannot replenish vitamin C, so they are prone to this disease, which leads to bleeding gums and can even be life-threatening, but after eating fresh vegetables and fruits and replenishing vitamin C gum bleeding will be relieved. For gum recession, vitamin C does not have a therapeutic effect. For gum recession, if it is a physiological gum recession in the elderly, it is a normal physiological change and there is no need to intervene. If the gum recession is caused by periodontitis, then it is recommended that the patient go to a professional dentistry department as soon as possible to treat the periodontitis, which generally requires supragingival scaling and subgingival scraping, along with the application of drugs, to treat this type of gum recession.