Fast, low-cost, and accurate three-dimensional scanning technology is a hot research topic in computer vision. First, this paper introduces the technical parameters and measurement principle of the Kinect v2 (Kinect for windows v2 sensor) and analyzes the advantages and disadvantages of Kinect v2 comparing to the first generation Kinect (Kinect v1). Secondly, considering the characteristics of Kinect v2 depth data noise, it designes a denoising method for depth data, and applies this method to the 3D reconstruction system. Finally, it implementes a real-time accurate 3D reconstruction system based on Kinect v2. Experimental results show that the proposed 3D reconstruction system can acquire an accurate 3D object model in real-time.