We propose a scheme for accurately simulating of the three-dimensional image of cold atomic cloud, which is more intuitive and stereoscopic than former two-dimensional image by probe laser. We have realized simulating of cold atomic cloud. The number of trapped atoms is about 108. The atomic cloud is about the geometric three-dimensional shape. Tri-axial ellipsoid with distinct semi-axis lengths Ｒｘ＝1.06 mm, Ry＝1.06 mm, Rz＝0.57 mm, and the three-dimensional image of cold atomic cloud was simulated for the first time.