Gingival recession is one of the common diseases in oral clinic, its main manifestation is that the gingival tissue located at the enamel bone boundary is displaced to the root side, causing the exposure of the root surface, which will lead to root sensitivity symptoms and root surface caries, etc. Gingival recession occurs in the front teeth will affect the aesthetics. The main reasons for gingival recession are: 1. incorrect brushing method: bristles are too hard, brushing force is too large. Clinically, it is common for horizontal brushing to damage the gum tissue and cause recession. 2, periodontitis: periodontitis can lead to alveolar bone resorption, and the height of gum attachment and the height of the alveolar bone is closely related, the more alveolar bone resorption, the more gum recession. 3, too much force on the teeth: some teeth bear too much force when eating, there is a possibility of gingival recession. 4, teeth misalignment: some teeth are not aligned, the protruding teeth bone plate and gums are thin, the gums can easily recede because of brushing or food flushing. Once gum recession occurs, it is difficult to restore to the previous condition. The main methods to prevent gum recession: 1. Master the correct brushing method: It is recommended to use soft-bristled toothbrush, brush with moderate force and take the correct brushing method; 2. Actively treat periodontitis: Patients with symptoms of periodontal disease should receive timely systematic periodontal treatment to terminate or slow down the development of lesions. For mild gingival recession without clinical symptoms, treatment can be unnecessary; for more extensive or more serious gingival recession, the focus of treatment is to prevent continued aggravation; for individual teeth or a few teeth with gingival recession, if the symptoms are obvious or the patient seriously feels that it affects the aesthetics, surgical methods can be considered for recovery, but not all gingival recession can be recovered by surgical methods.