A method for producing fluorinated polymer particles, comprising the following steps (i) and (ii), being a method for producing particles of a fluorinated polymer which has either one or both of structural units derived from tetrafluoroethylene and structural units having no sulfonic acid type functional group and having a cyclic structure and fluorine atom, and which has structural units having a sulfonic acid type functional group, wherein the proportion of the structural units is from 0 to 82 mol% in all structural units (100 mol%) in the fluorinated polymer: (i) a step of preparing solution or dispersion of the fluorinated polymer having the above fluorinated polymer dissolved or dispersed in a solvent, wherein the following conditions (i-1) and (i-2) are satisfied: (i-1) the solvent contains a good solvent wherein the solubility of the fluorinated polymer is at least 30%, (i-2) even when the above solution or dispersion of the fluorinated polymer is passed through a filter of 200 mesh made of stainless steel, no residue remains on the filter, and (ii) a step of mixing the above solution or dispersion of the fluorinated polymer and a solvent to aggregate the fluorinated polymer to form particles of the fluorinated polymer, wherein the following conditions (ii-1) to (ii-3) are satisfied: (ii-1) the solvent contains a poor solvent whereby the degree of swelling of the fluorinated polymer is at most 100%, (ii-2) the degree of swelling of the fluorinated polymer by a mixed solvent of the solvent and the solvent is from 70 to 250%, and (ii-3) the ratio (W C /W B) of the mass (Wc) of the solvent to the mass (W B) of the solvent is from 1 to 5. (i) a step of preparing solution or dispersion of the fluorinated polymer having the above fluorinated polymer dissolved or dispersed in a solvent, wherein the following conditions (i-1) and (i-2) are satisfied: (i-1) the solvent contains a good solvent wherein the solubility of the fluorinated polymer is at least 30%, (i-2) even when the above solution or dispersion of the fluorinated polymer is passed through a filter of 200 mesh made of stainless steel, no residue remains on the filter, and (i-1) the solvent contains a good solvent wherein the solubility of the fluorinated polymer is at least 30%, (i-2) even when the above solution or dispersion of the fluorinated polymer is passed through a filter of 200 mesh made of stainless steel, no residue remains on the filter, and (ii) a step of mixing the above solution or dispersion of the fluorinated polymer and a solvent to aggregate the fluorinated polymer to form particles of the fluorinated polymer, wherein the following conditions (ii-1) to (ii-3) are satisfied: (ii-1) the solvent contains a poor solvent whereby the degree of swelling of the fluorinated polymer is at most 100%, (ii-2) the degree of swelling of the fluorinated polymer by a mixed solvent of the solvent and the solvent is from 70 to 250%, and (ii-3) the ratio (W C /W B) of the mass (Wc) of the solvent to the mass (W B) of the solvent is from 1 to 5. (ii-1) the solvent contains a poor solvent whereby the degree of swelling of the fluorinated polymer is at most 100%, (ii-2) the degree of swelling of the fluorinated polymer by a mixed solvent of the solvent and the solvent is from 70 to 250%, and (ii-3) the ratio (W C /W B) of the mass (Wc) of the solvent to the mass (W B) of the solvent is from 1 to 5.