The invention relates to a cold-resistant environment-friendly water fire extinguishing agent. The cold-resistant environment-friendly water fire extinguishing agent contains no PFOS fluorine hydrocarbon surface active agent, is added with an active fire extinguishing component, is capable of solving the problems of synergic effects of all the components and cold-resistant environmental protection, is capable of greatly promoting the fire extinguishing efficiency, cold resistance and environmental protection level, meets the standard requirement of GB / T17835-2008 Water Fire Extinguishing Agent, has a smoke abatement function and is nontoxic. The cold-resistant environment-friendly water fire extinguishing agent is suitable for electrified fire extinguishing for various fire disasters, such as, solid, oily and water-soluble fluid fuels, is suitable for fire extinguishing with fresh water and seawater at low temperature below -40 DEG C, and can be filled into the present common fire extinguishing devices and pipeline fire extinguishing systems. The cold-resistant environment-friendly water fire extinguishing agent is simple in production process, low in equipment investment, low in production cost and suitable for large-scale production.