Method for producing granular polyarylene sulfide, and granular polyarylene sulfide

Provided are: a method for producing granular polyarylene sulfide (PAS) having an improved grain strength with an improved yield of the granular PAS by integrating and collecting polyarylene sulfide (PAS), having an intermediate molecular weight, into the granular PAS; and the granular PAS. The method for producing granular PAS according to the present invention includes a polymerization step forsubjecting a dihaloaromatic compound and at least one sulfur source selected from the group consisting of alkali metal sulfides and alkali metal hydrosulfides to a polymerization reaction in an organic amide solvent to obtain a reaction product mixture, and a cooling step for cooling the reaction product mixture after the polymerization step, wherein addition of a phase separator into the reactionproduct mixture is started at a time point between the start of the polymerization step and the start of formation of the granular PAS in the cooling step, the phase separator is added to the reaction product mixture by 50 ma