NOVELTY - Processing Paraquat (RTM: N,N'-dimethyl-4,4'-bipyridinium dichloride) pesticide waste water comprises introducing waste water into an oxidation kettle, adding a catalyst, which is activated carbon as oxide carrier, controlling pressure, carrying out air degradation, transferring the oxidized water into ammonia nitrogen stripping tower, adding the catalyst, passing air, stripping, conveying into dilute sulfuric acid absorption tower after absorbing ammonia to obtain ammonium sulfate by-product, evaporating, transferring into a biochemical system, cooling concentrate and centrifuging.    USE - The method is useful for processing Paraquat (RTM: N,N'-dimethyl-4,4'-bipyridinium dichloride) pesticide waste water (claimed).    ADVANTAGE - The method: completely removes oxide of cyanide ions in the waste water; carries out subsequent stripping and evaporation steps to ensure safety; recycles ammonium sulfate by stripping process and solid salt by-product; is safe, economical, and reduces the pressure on environmental protection.    DETAILED DESCRIPTION - Processing Paraquat (RTM: N,N'-dimethyl-4,4'-bipyridinium dichloride) pesticide waste water comprises (a) introducing waste water from a waste water collection tank into an oxidation kettle, adding a catalyst, which is activated carbon as oxide carrier, controlling the kettle pressure to be 5-7 MPa at 220-290 degrees C and carrying out air degradation, (b) transferring the oxidized waste water into ammonia nitrogen stripping tower, adding the catalyst, adjusting the pH to 12-14 and temperature to 40-60 degrees C, passing air from the bottom of the stripping tower, stripping for 3-5 hours, where the gas to water ratio is (5-10):1, conveying into dilute sulfuric acid absorption tower after absorbing ammonia to obtain ammonium sulfate by-product, and (c) transferring into an evaporator, evaporating at 60-80 degrees C, transferring into a biochemical system to reach discharge standard after treatment, cooling concentrate liquid, centrifuging to obtain solid salt by-product, and transferring the centrifugal mother liquid into the waste water collection tank for next repetition process.