A vacuum cleaner, comprising: a cleaner body; and a dust collector disposed in the cleaner body, wherein the dust collector comprises: a first cyclone provided within an outer case to filter foreign matter and dust from air introduced from an outside thereof and introduce the air from which foreign matter and dust have been filtered thereinto; a second cyclone accommodated within the first cyclone to separate fine dust from the air introduced into the first cyclone; and a rotating member disposed at a lower side of the first cyclone and configured to be rotatable so as to define a first storage section configured to collect foreign matter and dust filtered by the first cyclone between the rotating member and the outer case, and wherein the rotating member is provided with a roller portion disposed to face a lower cover that covers a lower opening of the outer case, and be brought in contact with foreign matter and dust collected in the first storage section during the rotation of the rotating member to apply a rotational force characterized in that the roller portion comprises a plurality of ribs disposed to be spaced apart from each other along a rotational direction of the rotating member, and sequentially brought into contact with foreign matter and dust collected in the first storage section during the rotation of the rotating member. a cleaner body; and a dust collector disposed in the cleaner body, wherein the dust collector comprises: a first cyclone provided within an outer case to filter foreign matter and dust from air introduced from an outside thereof and introduce the air from which foreign matter and dust have been filtered thereinto; a second cyclone accommodated within the first cyclone to separate fine dust from the air introduced into the first cyclone; and a rotating member disposed at a lower side of the first cyclone and configured to be rotatable so as to define a first storage section configured to collect foreign matter and dust filtered by the first cyclone between the rotating member and the outer case, and wherein the rotating member is provided with a roller portion disposed to face a lower cover that covers a lower opening of the outer case, and be brought in contact with foreign matter and dust collected in the first storage section during the rotation of the rotating member to apply a rotational force characterized in that the roller portion comprises a plurality of ribs disposed to be spaced apart from each other along a rotational direction of the rotating member, and sequentially brought into contact with foreign matter and dust collected in the first storage section during the rotation of the rotating member. a first cyclone provided within an outer case to filter foreign matter and dust from air introduced from an outside thereof and introduce the air from which foreign matter and dust have been filtered thereinto; a second cyclone accommodated within the first cyclone to separate fine dust from the air introduced into the first cyclone; and a rotating member disposed at a lower side of the first cyclone and configured to be rotatable so as to define a first storage section configured to collect foreign matter and dust filtered by the first cyclone between the rotating member and the outer case, and wherein the rotating member is provided with a roller portion disposed to face a lower cover that covers a lower opening of the outer case, and be brought in contact with foreign matter and dust collected in the first storage section during the rotation of the rotating member to apply a rotational force characterized in that the roller portion comprises a plurality of ribs disposed to be spaced apart from each other along a rotational direction of the rotating member, and sequentially brought into contact with foreign matter and dust collected in the first storage section during the rotation of the rotating member.