安氏Ⅱ类错是临床中最常见的错畸形之一 ,在这一类型的病例中 ,虽然高角病例并不多见 ,但矫治却最难 ,预后也比较差 ,给临床矫治造成了一定的困难。原因之一 ,是在这一类病例的矫治过程中 ,不能或者尽量不考虑使用Ⅱ类牵引。我院近年来采用改良式Ⅱ类牵引治疗这一种类型的 Class Ⅱ Malocclusion is one of the most common malocclusions in clinical practice. In this type of cases, although high-angle cases are rare, orthodontic treatment is the most difficult and the prognosis is relatively poor, resulting in clinical correction Certain difficulties. One of the reasons is that in the treatment of this type of cases can not or as far as possible not consider the use of Class Ⅱ traction. In recent years, our hospital with modified type Ⅱ traction treatment of this type