Medical visualization refers to the techniques and processes used to create images of the human body for clinical purposes or medical science including the study of normal anatomy and physiology. The visualization of medical images data sets is to reconstruct 3D images with the 2D slice images so as to reveal the 3D configuration of organs through human visual system. Visual C++ are used to reconstruct 3D images using the CT slice sequence. The key algorithms and human CT 3D visualization results are given in this paper. The coordinates can be acquired by the mouse clicking in the 3D space, by which to realize the point coordinate acquisition of the 3D medicine images. The visualization of medical images can provide us with more information and means of visual interactive for simulated operations and assistant diagnosis. The technique can realize the real time interaction quantitative measurement of three-dimensional CT image.