The technology of 3D reconstruction based on stereovision is researched by using computer vision theory. In the early time, 3D reconstruction was limited by the level of theoretical research, the modeling process required special equipment such as vision coordinate measuring machine to achieve and the movement of camera is severely restricted. The 3D reconstruction is performed on non- specific model by ordinary digital camera in the non-specific circumstances. The system is practical and simple and can accurately restore the three-dimensional information such as the location or geometric of the object, which cannot provide by two-dimensional image detection method.