This paper proposed a parametric NC programming method for the battlefield manufacturing to make the NC codes programming easier and quicker. The typical processing is analyzed to get the structure of the module and all the sub-module, to implement the method the dynamic link library (DLL) has been programmed in Microsoft Visual C++ as a functional module, which is embed in HNC-21. The experiments have been made to validate the method can generate the correct NC codes easily and quickly, and the codes can run exactly and well in HNC-21 to actuate the machine tool mounted HNC-21 to manufacture the remanufactured parts to qualified ones. The test shows that the method is proved to give the powerful supporting to the military maintenance in the battlefield, which needs better method to accomplish the manufacturing and maintenance quickly and accurately.