Abstract: Objective: To explore clinical significance of conjugate eye deviation in cerebral hemispheric apoplexy.Methods: Clinical data of 45 cases with eye deviation and 45 cases with non-eye deviation in cerebral hemispheric apoplexy were analyzed.Results: Conjugate eye deviation group had more patients with disorder of consciousness,with severer the nerve function deficit,with more extensive region of focus showed by CT and with worse prognosis than non-conjugate eye deviation group.There was significantly different(P<0.01).Cerebral infarction was in the brain lobes of middle cerebral artery and cerebral hemorrhage was in the extensive region of basal nuclei.Conjugate eye deviation pointed to the side of disease.When disease was worse,conjugate eye deviation was found.Conclusions: Conjugate eye deviation may be as basis of clinical diagnosis and index of evaluating disease.Conjugate eye deviation is as a result from secondary central herniation and damage of brain stem.