Abstract: The process planning and data information of aeroengine blade are written and drawn by 2D CAD software. The generated DWG process files are difficult to manage easily and efficiently. In this paper, the management method of blade CAD process information digitization is proposed. Firstly, the relationship between blade drawing process specification and data information is analyzed. The least square method is used to locate the size of the drawing, and the key position is determined according to the coordinates to judge the type of blade process card; Then, the process information of the cells needed for recognition is judged, the text is sorted by using the regularization algorithm, and the special characters are recognized and processed to obtain the accurate blade process information data after adjustment. The practical results show that the method can quickly and stably identify the process information data in CAD process files, and provide the application reference of drawing management method for the factory to realize intelligent manufacturing digitization.