Disclosed is a process for producing granular polyarylene sulfide by polymerizing a sulfur source and a dihalo aromatic compound in an organic amide solvent by a polymerization technique involving a phase separation polymerization step. The process, after the phase separation polymerization step, further involves the following steps (I) to (III): (I) adding an aromatic compound to a liquid phase in the polymerization reaction system in an amount of 0.01 to 20 moles relative to 100 moles of the organic amide solvent, wherein the liquid phase contains the organic amide solvent and a polymer product produced by the phase separation polymerization step and gets in a phase-separated state; (II) cooling the liquid phase in the polymerization reaction system; and (III) collecting the polymer product from the liquid phase.