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Due to the intrinsic property of B-Spline surface, the surface reconstruction with scattered and chaos point-cloud is a challenging problem. This paper proposed a skinning surface algorithm of B-spline for scattered point-cloud. First, raw data was preprocessed including denoising, simplifying and slicing to obtain section data. Second, approximating cross section data into B-spline curves and resampling to ensure the common knot vector. Then the new data would be parameterized and interpolated into B-spline curves. Finally, surface of scatter point-cloud would be reconstructed by skinning. Experiments demonstrate that this method is easy to implement and provides an accurate surface model.