分析了双层辉光技术的特点，指出该技术在材料表面合金化方面，是一项适合于高熔点金属 表面合金化和采用高熔点金属对铁基或某些熔点较高的有色金属材料进行表面合金化的工艺技术.

The principle, Discharge mode, alloying process and research works of double glow discharge plasma surface allloying process are introduced particularly in the paper. The advantage of the technology is analysised from theory. The technology is fit for high melting point metal surface alloying and surface alloying in surface of high melting point metal and some coloured metal.