Using the Medical Imaging Experimental Teaching Demonstration Center of Nanjing Medical University and related web site as a platform， we have established a case library and online learning system which fused medical imaging， pathology and anatomy images according to the human organ system. The system has achieved a “medical imaging” teaching real-time， diversified， systematic and clinical simulation technology. Medical students can perform image processing， simulate writing reports and discuss online using this system. Teachers can use the system to carry out teaching reform-problem-based learning（PBL）， and the integration of teaching with horgan systems and case based curriculum.