An electron beam apparatus equipped with a review function of a semiconductor wafer includes a scanning electron microscope to obtain image information of a semiconductor wafer, and an information processing apparatus to process the image information. The information processing apparatus includes a data input unit to receive positional information of a defect on the wafer, a storage for storing a plurality of image information of a position on the wafer corresponding to the positional information, and an image processing unit that retrieves any of the plurality of image information, and classifies the retrieved image information corresponding to the positional information depending on the type of defect.