The asymmetric face is common so that increased interest in it .there are different ways to assess the asymmetry. Computed tomography is an accurate way that enable the examiner for reading the face at three planes ,and present three-dimensional information on the cranial mandibular Complex whereas (3D) analysis is essential for making a precise diagnosis of craniofacial morphology. Aim : This research aims to study the asymmetric at the facial patterns malocclusion (class I. Class II) using CT . the research sample consists of 48 CT image (male 23 and female 15)their ages ranged between 18 and 35 years old and did not receive any orthodontic treatment before, and devided into two groups according to the malocclusion ptterns(17 class II, 31 class I ) . Analysis was performed T. student test then calculated for all the data obtained . This study showed that a significant difference between the class I and class II malocclusion in each of the right and left.