Abstract: Objective To discuss and compare the similarities and differences in the curative effects of SUS2 and Jasper Jumperin treating Angle class Ⅱdivision 1 malocclusion. Methods 46 adolescent Angle class Ⅱdivision 1 patients were selected and randomly divided into two groups,respectively using SUS2 and Jasper Jumper orthodontic appliances.Lateral cephalograms were taken and the changes of 18 measurement indexes were observed and used in cephalometric analysis before and after treatment. Results Changes of such indexes as ANB,Yaxis,L1MP and U6OLP were significantly different between two groups. Conclusions There are some differences in the curative effects between SUS2 and Jasper Jumper and we should choose the most appropriate one for treatment.