The invention relates to a digital human body three-dimensional reconstruction method based on a Kinect device. The method specifically includes the following steps that firstly, scanning is performed, and surface feature data are obtained; secondly, denoising preprocessing is performed on the surface feature data, and smooth depth information without noise is obtained; thirdly, rigid-body matching and non-rigid-body matching are sequentially performed on the depth information, and a three-dimensional model is obtained. According to the digital human body three-dimensional reconstruction method, the scanning time is short, the scanning process is simple, a hardware device needed in scanning is simple, coordination with other people or instructions learning in advance are not needed in the scanning process, the result geometric accuracy is high, the face structure, the clothes texture structure and the like are quite clear, due to a test, the system stability is high, a one-button mode is adopted in a whole system, a user does not need to set any parameter or change, a final result can be obtained as long as one button is pressed, the operation time is short, and a color map is automatically generated.