The character of the laser direct-writing device(LDWD)is analyzed. The key factor that affects the processing efficiency of the device is the drawing which is often varied

and for the program language isnt standard as well

it needs much time to debug motion code. By inputting the processing drawing

and adding ancillary message on drawing

the DXF file for processing drawing can be created using the function of CAD. The interpreting program which can translate the drawing exchange file of CAD into motion code is edited by utilizing the drawing function and the drawing exchange file of CAD. By using interpreting software the efficiency of the device can be improved. The debugging time of motion control program is shorten. The method is given to realize autocode for the device.