To provide a polyarylene sulfide resin composition having excellent cold-heat cycle impact resistance in a molded product of the polyarylene sulfide resin composition and further good fluidity during molding of the molded product.

The polyarylene sulfide resin composition comprises a polyarylene sulfide resin (A) containing a carboxylic acid metal salt in the molecular structure and having the content of the metal atom composing the carboxylic acid metal salt within the range so as to provide 20 to 150 mol/g and a thermoplastic elastomer (B) in an amount within the range so as to afford 8-20 pts.mass based on 100 pts.mass of the polyarylene sulfide resin (A). The thermoplastic elastomer (B) contains an epoxy group-containing elastomer (b) and the content of epoxy groups in the thermoplastic elastomer (B) is within the range of 300 to 600 mol/g.