The invention relates to a copper wire drawing liquid, which comprises the following raw materials by weight: 3-8% of pentaerythritol isooctanoate, 1-5% of an extreme pressure agent, 0.1-0.8% of a water-soluble copper corrosion inhibitor, 1.0-5.0% of ammonium borate, 0.2-1.5% of phosphate, 4-12% of fatty alcohol polyoxyethylene ether, 5-15% of polyether, 0.5-2.5% of diethylene glycol, 0.5-1.5% ofa sterilization agent MBM, and the balance of base oil. According to the present invention, the copper wire drawing liquid can meet the rapid copper wire drawing requirement, is the micro-emulsification liquid containing a small amount of mineral oil, uses the synthetic polyol fatty acid ester as the oily agent, uses the water-soluble phosphorus-containing compound as the extreme pressure agent, uses the polyether-based nonionic surfactant as the main emulsifier, has effects of good lubrication, good cooling and good cleaning, does not easily generate copper soap, has characteristics of long service life and good oxidation resistance, and can completely meet the rapid copper wire drawing requirement.