The invention discloses a phosphorus trichloride production wastewater purification treatment method, characterized by adding an oxidizing agent into phosphorus trichloride production wastewater to obtain a mixture, stirring the obtained mixture, then reacting at room temperature, standing for layering after the reaction to obtain a mixture, filtering the mixture to obtain clear liquid, sending the clear liquid into a sewage treatment plant and discharging after treating and reaching standards, and feeding obtained dregs into an incinerator for incineration. The method provided by the invention has the following advantages: 1, the method can be used to effectively remove total phosphorus pollutants in the wastewater, the quality of the wastewater after treatment is clean and transparent, the COD is less than 50mg/l, the total phosphorus is equal to or less than 0.5mg/l, national emission standards are met, the treatment difficulty of the sewage treatment plant is reduced, the loss of useful materials is reduced, the equipment utilization rate is improved, and the environment is improved; 2, the technological process of the method is simple and convenient, the operation is simple, the cost is low, and the pollutant removal rate is improved, so the method provided by the invention has good popularization value.