Loosening of newly erupted permanent teeth in children should be treated first for the cause, if it is only physiologic mobility, it can be left untreated. Within the normal range of physiological mobility does not need to do treatment, if there is trauma, there is occlusal trauma, can be appropriate reconciliation, reduce the trauma, so as to reduce the looseness of this degree. There is another type of looseness that is caused by trauma, and this is when ligature fixation is indicated. Those that are traumatized should also be slightly attuned to reduce the looseness. Trauma-induced loosening of permanent teeth should always be checked and fixed with regular follow-ups, and should only be removed after the loosening has been completely eliminated.