Reasons arousingmanufacturing errors were analyzed. And it was introduced that revising methods should be adopted to any error. The errorswere aroused not only by single reason but also by all reasons together. By using DEA controlmodel based on OEF geometry algorithm and adopting high precise scanner,laser scanningmanufacturing errors is reduced,and manufacturing precision is enhanced effectively. And the revising methodswere also adapted to precise laser Doppler scanning measurement system.