Because so it is weight % of powder content 70, with the alpha chemical material of the specific material which is above and amylose content 20% or less where Acid treatment or it oxidized treated it is being the powder, B die viscosity of specification is shown, because are the powder the raw materials which include, in order size eye opening 0.5mm (32 mesh) on 5 the sieve weight % above 100 weight % to become granular ones below, corning doing, being the boiled rice revised medicine which can, the raw materials are, weight % of powder content 70 are above the alpha chemical material 1 - 45 weight sections and amylose content 20% or less where Acid treatment or it oxidized treated, it is the powder 40 - 99 weight sections and,Because, is weight % of powder content 70 while including and raw materials are above the alpha chemical material and amylose content 20% or less where Acid treatment or it oxidized treated, is total of the powder 45 weight % is above, the boiled rice revised medicine. < Choice figure >It is notでん粉含量70重量%以上の特定材料のアルファー化物と、酸処理または酸化処理したアミロース含量20%以下のでん粉であって特定のB型粘度を示すでん粉とを含む原料を、大きさが目開き0.5mm(32メッシュ)篩上5重量%以上100重量%以下の粒状物になるように造粒して得られる米飯改良剤であって、原料が、でん粉含量70重量%以上のアルファー化物1~45重量部と、酸処理または酸化処理したアミロース含量20%以下のでん粉40~99重量部と、を含み、原料中の、でん粉含量70重量%以上のアルファー化物および酸処理または酸化処理したアミロース含量20%以下のでん粉の合計が45重量%以上である、米飯改良剤。【選択図】なし