Steel braces are traditional orthodontic braces, generally each tooth has a piece of iron, its appearance is more obvious, and there will be a wire on the braces, orthodontic effect is more clear and long clinical application, is the traditional fixed braces. Invisible braces are the new orthodontic treatment in recent years, mainly transparent, beautiful, the main difference in the degree of aesthetics, transparent braces can be taken off at any time and better aesthetics. In addition, the difference is also greater when eating, steel braces can not be taken off, during the orthodontic treatment has been worn to the teeth, avoid eating hard, sticky food, try to avoid touching the braces to avoid falling off. Invisible braces can be removed, so they can be taken off when eating, which may be more convenient for patients to eat. In addition, there is a big difference between the two, probably in the choice of indications, some cases are more suitable for invisible braces and some cases are more suitable for traditional steel braces. Therefore, in addition to aesthetics and convenience, indications should be considered when choosing braces.