Invisalign is a new type of dental aligner that has been introduced in recent years and is different from the steel aligners that are commonly worn. Invisalign is a clear aligner that looks better when worn, but also requires long-term patient cooperation. Since it is removable, it requires a high level of patient compliance for perfect orthodontic treatment. The average aligner needs to be worn for more than 22 hours, and if it is not cooperative, the orthodontic treatment will need to be stretched over a long period of time. Under normal circumstances the orthodontic treatment can be completed in about 12-15 months and usually needs to be replaced every 2 weeks. Features are able to take off and wear at will and take off after the brush is more convenient, but also to meet the patient’s aesthetic psychology, steel braces patients may have certain psychological factors when orthodontic, and steel braces may be fixed for a longer period of time patients will feel uncomfortable.