The invention relates to a glufosinate-ammonium clean production process and a method thereof, in particular to a glufosinate-ammonium salt reaction liquid purification and refining (including desalination, decoloration, concentration and the like) method, which adopts the combined process of electrodialysis desalination, ultrafiltration decoloration, activated carbon decoloration, evaporation, concentration and crystallization, nanofiltration and concentration, NOC advanced oxidation, evaporation, crystallization, salt separation, reverse osmosis concentration and the like. The glufosinate-ammonium salt reaction liquid does not need to be diluted and directly enters electrodialysis desalination, the desalinated liquid is subjected to ultrafiltration decolorization and activated carbon decolorization, and the method is suitable for desalination decolorization treatment of various glufosinate-ammonium ammonolysis reaction liquids. Compared with the prior art, the method has the advantages of short process flow, low equipment material requirement, investment saving, low operation cost, energy saving, water saving, small occupied area, few control points, simplicity in operation, convenience in realizing automatic control, high product recovery rate, stable and reliable product quality and the like.