Echography has been used in every field of medical diagnosis because of its safety and cost-effectiveness. However, the skill to recognize relationship between ultrasound probe and internal organ is required to acquire echocardiogram. Therefore we have developed an extraction software of internal organs from real-time echogram. Then we have applied to a reconstruction system of 3D shape of internal organs based on AR (Augmented Reality) and VR (Virtual Reality) technology using ARToolKit. Furthermore, GUI interface to visualize the internal organ was developed by OpenGL. We confirmed the usefulness of the system for the reconstruction of the shape of left ventricle and liver to visualize of internal organ.