The blade is an important part of aero engine. It is easy to be damaged due to the bad working environment. It is economical to repair the damaged blade, and the model reconstruction is one of the key technologies of aero-engine blade repair. A blade model reconstruction method based on speckle vision measurement is proposed. The speckle vision system is used to collect the speckle on blade surface, and the local point cloud data are obtained by speckle stereo matching. Then, the entire point cloud of the blade is obtained through the point cloud splicing, at the same time, the boundary points are extracted according to the curvature of the blade point cloud, and the boundary points of the blade point cloud are fitted by the cubic B-spline curve to obtain the envelope curve of the blade. The envelope curve and point cloud are used to reconstruct the blade model. Finally, the experimental verification of the method is given, and the feasibility of the method is proved.