The invention discloses a non-phosphate precipitation wet phosphoric acid purification method, which belongs to the field of phosphorus chemical industry. The non-phosphate precipitation method wet-process phosphoric acid purification technology is to use the chemical agent to combine with the anion and cation of dilute phosphoric acid to form an insoluble double salt, which is precipitated in the form of non-phosphate, so as to achieve the purpose of wet-process phosphoric acid purification and meet the requirements of high-concentration production. Requirements for phosphate fertilizers, water-soluble fertilizers and industrial-grade phosphate products. The method is stable in removing iron, magnesium, aluminum, arsenic, lead, sodium, potassium, and sulfate radicals in wet-process phosphoric acid, and has simple reaction conditions, short process flow, wide range of reagent sources, low treatment cost, and P 2 o 5 With the characteristics of high recovery rate, it realizes the one-step dilute acid "removal of half and half + weight removal + desulfurization". After treatment, the removal rates of wet-process iron phosphate, magnesium, and aluminum are over 97%, 70%, and 15% respectively. The arsenic and lead in dilute acid are less than 5ppm, and sodium (calculated as NaO) and potassium (calculated as K 2 O meter) respectively less than 0.025%, 0.083%, sulfate less than 0.16%, P 2 o 5 The recovery rate is higher than 98.5%.