The invention relates to non-phosphorus degreasant. The non-phosphorus degreasant is composed of the following raw materials, by mass percent, including 25%-45% of sodium carbonate, 10%-20% of sodium metasilicate, 20%-30% of anhydrous sodium sulphate and 6%-8% of an S601B cracking agent. The degreasant is suitable for removing metallic surface oxidation films and washing various surface dirt, can quickly and completely volatilize, do not leave any residue, and is safe and free of damage to objects such as metal, coating decoration faces, insulation coverage layers and dissolving-resistant rubber and plastic. Harmful matter like carbon tetrachloride and benzene is not contained. The permeability is high, and complete equipment dismantling for washing is not needed; the degreasant does not contain a compound containing phosphorus, the compound containing phosphorus is replaced with an existing raw material, and the efficient degreasing aim is achieved; and meanwhole, waste water generated by washing does not contain phosphorus, and the environmental protection requirement is achieved.