The invention relates to the field of production processing of ammonium paratungstate, in particular to a production technology method of fine ammonium paratungstate particles. The method comprises the following steps that 1) a desorption solution is divided into four segments, wherein the first segment is a prepeak solution from a tungsten containing layer to the layer with the tungsten content of 1.10; the second segment is a peak solution with the tungsten content increased from 1,10 to 1.22 and decreased from 1.22 to 1.10; the third segment is an ultrahigh solution with the tungsten content increased from 1.22 to 1.28 as a peak value and decreased to 1.22 from 1.28; the fourth segment is a back segment solution with the tungsten content decreased from 1.10 to 0; 2) the desorption solution obtained in the step 1) is subjected to molybdenum removal and evaporative crystallization, and the stirring speed of evaporative crystallization is controlled to 70-80 revolutions per minute. According to the method, the quality of the peak solution is improved, the WO3 content is greater than or equal to 280 g/L, and the Cl- content is less than or equal to 5 g/L; the stirring speed (70-80 revolutions per minute) of evaporative crystallization is increased; through the improvement technology, according to the ammonium paratungstate mass, the Fisher particle size is 25-30 micrometers, and-325 mesh is greater than or equal to 60%.