To provide a resin composition containing a polypropylene resin and a polylactic resin, excellent in thermal resistance and boiling resistance, and preferably useful for a food tray.

A resin composition contains (A) a polylactic resin, (B) a polypropylene resin, (C) a talc, (D) a glass fiber, (E) styrene-ethylene butylene-styrene block copolymer (SEBS) and (F) a polycarbodiimide compound, and the mass ratio ((A)/(B)) of (A) and (B) is 30/70 to 45/55, the content of (C) is 18 to 25 pts.mass, the content of (D) is 1.0 to 4.5 pts.mass, the content of (E) is 1.5 to 6 pts.mass, the content of (F) is 1 to 2 pts.mass and the sum total content of (C) and (D) is 20 to 26 pts.mass, based on sum total 100 pts.mass of (A) and (B).