Objective:To study the MRI features of neurofibromatosis.Materials and Methods:This study included 12 patients of neurofibromatosis,the MRI findings were analyzed.Results:Neurofibromatosis was found in NF I(n=10)or NFⅡ(n=2),MRI could well demonstrate the size,the shape and the signal characteristics of neurofibromatosis.Conclusion:MRI can be considered as first choice of study in diagnosing of neurofibromatosis.