The surface reconstruction technology in the reverse design is the key technology of RE.The precision of reverse reconstruction has direct influence on the quality of the reverse design product.Taking precision control of the die face of the blade as an example,combining with the ATOS scanner system,analyzing the precision and the error distribution of every aspect during the reverse design process,the method of precision control during reverse reconstruction was analyzed,the die face of the blade meeting the reverse remodeling process accuracy was obtained,the precision control on the reconstruction of the blade die face based on RE was realized.