Additional figure information in MR images is able to provide guidance for Magnetic Resonance Spectrum (MRS), helping located lesions, and it has certain clinical application significance. While several free Digital Imaging and Communication in Medicine(DICOM) Viewers are able to display DICOM image files and key information, however it still has some shortages in the applications to the area of scientific research. First at all, their major basic function is just to display images. In some extent, they could only give the assistance to the research of magnetic resonance data. And then they are unable to completely display some special kinds of DICOM images, such as Siemens/GE magnetic resonance imaging. The location information of MRI images would be often lost in it. Above all, a program named dicomreader that displays DICOM image properly is developed by using Java and the open source toolkit of dcm4che. The process for extracting overlay pixels and displaying additional information on the DICOM images is also proposed. Finally, the experimental results show that dicomreader is able to implement the conversion from DICOM to image quickly and display the additional information precisely. Meanwhile, the additional information extracted could be used by research personnel for locating the pathological change of organism, such as brain tumor, three-dimensional reconstruction of brain organism, the partition of MRI images, and clinic diagnosis based on the information of wave spectrum.