Abstract: The clear aligner technique is a new orthodontic method to treat malocclusions by pre-fabricated removable clear appliance using artificial intelligence and maga data based calculations. Using the computerized 3D diagnosis and the treatment planning system, a clinician can complete the whole progress of a malocclusion treatment. The clear aligner technique changed many aspects of the orthodontic techniques and become a new step stone to the next development of the modern orthodontics. Before to use the clear aligner technique to treatment varied malocclusions, there are two main questions should be answered: whether clear aligner could resolve malocclusions as effectively as the fixed appliance; Whether there was any differences between the clear aligner appliance and the fixed appliance when malocclusions were treated. The orthodontic intervention and comprehensive treatment for teenagers is the future of the clear aligner clinic application. This article is to classify the clinic indication of the clear aligner in teenagers；summarizing the characters of the clear aligner in orthodontic diagnosis, treatment planning and treatment result evaluation. With efforts of Chinese orthodontists, we believe that the clear aligner technique could be well used clinically and Chinese teenagers with malocclusions will be benefited from the development ultimately.