Whether loose teeth can be recovered or not, the cause of occurrence needs to be clarified. If it is severe loosening caused by periodontal disease, it cannot be recovered. If it is early loosening of the first degree or two degrees can be treated by basic treatment of periodontal combined with surgical treatment and fixation of loose teeth, the looseness of teeth will be improved, but it cannot reach complete looseness. In case of obvious tooth loosening caused by trauma, after judging the root condition, dental arch splinting can be considered for tooth fixation and tooth loosening can be improved, followed by further treatment such as root canal treatment. The most common clinical condition is still the loose teeth caused by periodontal disease, so early diagnosis and early treatment of periodontal disease must be achieved. The earlier the treatment, the better the looseness and the better the long term results. Therefore, it is recommended that patients need to go to the hospital dentistry department every three months or six months for oral examination, regular dental cleaning, and also pay attention to brush teeth as much as possible after eating and rinse mouth with warm water, which can protect teeth.