PURPOSE: To obtain a polyphenylene sulfide resin composition useful as precision molded article, etc., having excellent fluidity and mold release characteristics, showing low barrier properties by blending specific amounts of a specific polyphenylene sulfide resin, a mold release agent such as polyethylene wax and an inorganic filler.

CONSTITUTION: The composition comprises (A) 100 pts.wt. polyphenylene sulfide resin having 50-150g/10 minutes melt flow rate measured under a condition with an orifice having 0.0825 ± 0.0002 inch, 1.250±0.001 inch orifice length under 1,270g load at 600±1°F and ≥1wt.% low-molecular weight component extracted in a suspension state at normal temperature by using methylene chloride, (B) 0.1-3 pts.wt. mold release agent composed of polyethylene wax, ethylene-propylene copolymer wax, a compound of formula I [X is CO-R (R is 6-24C alkyl or alkenyl)] or a compound of formula II (n is l-3) and (C) 20-300 pts.wt. filler such as glass fibers, talc or glass powder.