To meet the requirement for the high accuracy curvature measurement of special pipe,a method based on charge coupled device (CCD) dual-laser collimation is proposed. The curvature measurement theories based on both CCD single-laser collimation and dual-laser collimation are introduced. A dynamic rotation model of target is established,and the rotation angle is extracted accurately by the pinpoint method of the dual-laser spots and field calibration method of the concentric circles. Finally,the accurate curvature of special pipe is acquired after correcting the measurement results. Experimental results show that the amplitude errors is ±0.01 mm,and the azimuth angle errors is ±10″. This method is quite stable and accurate,which can meet the requirement for the high accuracy curvature measurement of special pipe.