The invention relates to a non-phosphate degreasant belonging to the surface cleaning agent technology field of metallic material, which comprises the raw materials by weight parts as follows: a surface active agent is 1 to 15 parts, a self-defoaming emulsifier is 1 to 5 parts, sodium hydroxide is 15 to 25 parts, sodium citrate is 0.1 to 3 parts, sodium carbonate is 0.1 to 5 parts, 9H2O-sodium silicate is 1 to 10 parts, and water is 40 to 99 parts. The non-phosphate degreasant has the advantages that all raw materials of the degreasant are easy to get in the market; various raw materials can be used only through evenly stirring by hand or mechanically without fussy manufacturing process just like the prior art, thereby satisfying the convenient and time-saving requirements for self-making and self-consumption on a product line of a zincification enterprise; the adaptive temperature ranges from 20 to 48 DEG C (the adaptive temperature of the degreasant in the prior art ranges from 50 to 80 DEG C), and the advantage of saving energy sources is realized.