NOVELTY - A thermoplastic resin composition contains propylene polymer (A) (in wt.pts) (0-70) and propylene type copolymer (B) (30-100). Melting point of polymer (A) is 100degrees C or more. Melt flow rate (MFR) measured at 230degrees C and 2.16 kg load of copolymer (B) is 0.01-100 g/10 minutes. Syndiotactic triad fraction of copolymer (B) is 60% or more. Copolymer (B) contains structural unit (55-90 mol%) induced from propylene, and structural unit (10-45 mol%) induced from 2-20C alpha -olefin(s) excluding propylene. Intrinsic viscosity and MFR of copolymer (B) satisfy preset relation.    USE - Thermoplastic resin composition is used for manufacture of sheet for sealing of solar cell (both claimed).    ADVANTAGE - The thermoplastic resin composition provides sealing sheet with excellent heat resistance and favorable flexibility, stress adsorption capability, mechanical strength and transparency. The sealing sheet prevents generation of crack of electric power generation module.    DETAILED DESCRIPTION - A thermoplastic resin composition contains propylene polymer (A) (in wt.pts) (0-70) and propylene type copolymer (B) (30-100). The melting point, observed by differential scanning calorimetry, of polymer (A) is 100degrees C or more. The melt flow rate (MFR), measured according to ASTM D1238 at 230degrees C and 2.16 kg load, of copolymer (B) is 0.01-100 g/10 minutes. The syndiotactic triad fraction, measured by 13C nuclear magnetic resonance method, of copolymer (B) is 60% or more. Copolymer (B) contains structural unit (55-90 mol%) induced from propylene, and structural unit (10-45 mol%) induced from 2-20C alpha -olefin(s) excluding propylene. The intrinsic viscosity (eta in dL/g) measured in decalin at 135degrees C and MFR of copolymer (B) satisfy the relation: 1.5x MFR (-0.2)less than or equal to (eta )less than or equal to 2.65x MFR(-0.2).    DESCRIPTION OF DRAWING(S) - The drawing shows the relationship between melt flow rate and intrinsic viscosity of isotactic propylene polymer, and propylene type copolymer. (Drawing includes non-English language text)