The invention discloses an industrial waste-water treating system for a paper making factory. The industrial waste-water treating system comprises a pretreatment water collecting tank, a grating, a grit tank, a physical filter tank, an ice grating, an electromagnetic adsorption tank, an air floating tank, an acidification tank, a contact oxidation tank, a secondary sedimentation tank, a reflux treating tank, an artificial wetland treating system, a recirculation storage tank, a sludge storage tank, and a belt pressure filter, wherein the temperature in ice grating equipment is minus 2-10 DEG C. The waste-water treating system adopts environment-friendly ice grating equipment with low energy consumption, and the ice grating equipment is applied for the waste-water treating technology in paper making for the first time; the waste-water treating system has an obvious removing effect on organic matters and small-sized solid suspended matters, which are unique and difficult to remove, in paper-making waste water, and chemical reagents are not added. In the paper-making waste water treated by the waste-water treating system, the removal rate of chemical oxygen demands is 98.1%; the removal rate of total nitrogen is 97.2%; the removal rate of five-day biochemical oxygen demands is 95.1%; the removal rate of suspended matters is 96.1%; the removal rate of chroma is 90.1%; the removal rate of turbidity is 98.8%.