A method for charging raw materials into a bell-less blast furnace, the method comprising charging an iron source material and a carbonaceous material into a furnace interior of the blast furnace by rotating a distribution chute , wherein the distribution chute includes a diversion plate at an end of the distribution chute , the diversion plate being inclined downward relative to a conveying direction of the distribution chute , and further wherein i) a rotational speed of the distribution chute is greater than or equal to 12.0 rpm, and an inclination angle of the distribution chute is greater than or equal to 1.36α, where α is an angle defined by a distance d, a throat radius Ro, and expression , shown below, and the distance d is a distance from a center of rotation of the distribution chute to a raw material deposition level of the furnace interior, the raw material deposition level being a level at a start of raw material charging tan α = Ro/d or ii) a rotational speed of the distribution chute is greater than or equal to 14.0 rpm, and an inclination angle of the distribution chute is greater than or equal to 1.41α, where α is an angle defined by a distance d, a throat radius Ro, and expression , shown below, and the distance d is a distance from a center of rotation of the distribution chute to a raw material deposition level of the furnace interior, the raw material deposition level being a level at a start of raw material charging. tan α = Ro/d whereas the inclination angle of the distribution chute is an angle between the raw material conveying direction of the distribution chute and a vertically downward direction; and the throat radius Ro is at the level of the raw material deposition surface of the furnace interior at the start of raw material charging. charging an iron source material and a carbonaceous material into a furnace interior of the blast furnace by rotating a distribution chute , wherein the distribution chute includes a diversion plate at an end of the distribution chute , the diversion plate being inclined downward relative to a conveying direction of the distribution chute , and further wherein i) a rotational speed of the distribution chute is greater than or equal to 12.0 rpm, and i) a rotational speed of the distribution chute is greater than or equal to 12.0 rpm, and an inclination angle of the distribution chute is greater than or equal to 1.36α, where α is an angle defined by a distance d, a throat radius Ro, and expression , shown below, and the distance d is a distance from a center of rotation of the distribution chute to a raw material deposition level of the furnace interior, the raw material deposition level being a level at a start of raw material charging tan α = Ro/d or ii) a rotational speed of the distribution chute is greater than or equal to 14.0 rpm, and an inclination angle of the distribution chute is greater than or equal to 1.41α, where α is an angle defined by a distance d, a throat radius Ro, and expression , shown below, and the distance d is a distance from a center of rotation of the distribution chute to a raw material deposition level of the furnace interior, the raw material deposition level being a level at a start of raw material charging. tan α = Ro/d whereas the inclination angle of the distribution chute is an angle between the raw material conveying direction of the distribution chute and a vertically downward direction; and the throat radius Ro is at the level of the raw material deposition surface of the furnace interior at the start of raw material charging. <EOS>