To provide a thermoplastic elastomer composition that has excellent re-sealability, has low odor and can reduce the amount of eluted substances.SOLUTION: The thermoplastic elastomer composition includes 100 pts.mass of (a) a hydrogenated block copolymer, 10 to 50 pts.mass of a polypropylene-based resin, 75 to 200 pts.mass of (d) a nonaromatic softening agent and 1 to 150 pts.mass of (e) an inorganic filler. In the thermoplastic elastomer composition, the component (a) includes at least one polymer block A1 composed mainly of a vinyl aromatic hydrocarbon compound monomer unit and at least one polymer block B1 composed mainly of a conjugated diene compound monomer unit and contains (a-1) a hydrogenated block copolymer produced by hydrogenating a block copolymer； the weight average molecular weight of the component (a-1) is 100,000 to 550,000； the content of the whole vinyl aromatic hydrocarbon compound monomer units in the component (a-1) is more than 20 mass% to 50 mass%； and the component (e) is surface-treated silica.SELECTED DRAWING: None【課題】優れた再シール性を有し、臭気が低く、溶出物の低減化が図られる熱可塑性エラストマー組成物の提供。【解決手段】水添ブロック共重合体（ａ）１００質量部と、ポリプロピレン系樹脂（ｂ）１０～５０質量部と、非芳香族系軟化剤（ｄ）７５～２００質量部と、無機充填剤（ｅ）１～１５０質量部とを含み、前記（ａ）が、少なくとも１個のビニル芳香族炭化水素化合物単量体単位を主体とする重合体ブロックＡ１と、少なくとも１個の共役ジエン化合物単量体単位を主体とする重合体ブロックＢ１と、を含み、水素添加された水添ブロック共重合体（ａ－１）を含有し、前記（ａ－１）の重量平均分子量が１００，０００～５５０，０００であり、前記（ａ－１）の全ビニル芳香族炭化水素化合物単量体単位の含有量が２０質量％を超え５０質量％以下であり、前記（ｅ）が表面処理されたシリカである、熱可塑性エラストマー組成物。【選択図】なし
