The present invention relates to an eco-friendly water-soluble cutting oil containing polyoxometalate (POM), Dissolve polyoxometalate 1 (POM 1), polyoxometalate 2 (POM 2) or polyoxometalate 7 (POM 7), which are biocompatible antibacterial agents in a solid powder state, in water. By manufacturing eco-friendly water-soluble cutting oil, The eco-friendly water-soluble cutting oil produced by the manufacturing method of the present invention has strong oxidizing power, has antibacterial and deodorizing functions, is non-toxic, has high solubility in water and organic solvents and thermal stability, and is It has strong absorbency, high reoxidation and antibacterial properties by various oxidizing agents, and has a remarkable effect that is harmless to the human body.
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