Loose teeth can be caused by a variety of reasons, to determine whether the loose teeth are caused by kidney deficiency, but also according to the other symptoms shown by the body for a comprehensive analysis. Kidney deficiency can cause a series of symptoms such as aging and declining functions, including loose teeth and tooth loss, and kidney deficiency can also manifest as weakness in the waist and knees, mental fatigue, dizziness, tinnitus, hair loss and poor hair quality, and urination. However, loose teeth are not necessarily caused by kidney deficiency, there are many reasons for loose teeth, but in the final analysis, there are two main reasons, one is the change of tissues around the roots of teeth, such as chronic periodontitis, poor occlusion of teeth, changes in female hormone levels; the second is the resorption of the roots of the teeth themselves become shorter, resulting in loose teeth, such as children before the replacement of milk teeth will occur the resorption of the roots of milk teeth, when it reaches a certain level can appear teeth Loosening of teeth in this case is generally painless and uncomfortable. Therefore, if the loosening of teeth is accompanied by clinical manifestations such as weakness of the waist and knees, tinnitus, deafness, dizziness, blurred eyes, dry eyes, and astringent eyes, it is caused by kidney deficiency, and appropriate oral medication for kidney tonic, such as Kidney Tonic and Tooth Pill, should be taken. The prevention of loose teeth needs to address the relevant etiology and maintain oral hygiene. Patients are advised to have regular oral examination and oral cleaning to prevent oral diseases.