A vacuum cleaner comprising: a cleaner body comprising: a suction force generator configured to generate a suction force, and a foreign substance collection chamber configured to collect foreign substances; and a suction head connected to the cleaner body, configured to: suck foreign substances on a surface to be cleaned, and guide the foreign substances to the foreign substance collection chamber, wherein the suction head comprises: a housing including a suction port; a drum brush rotatably installed in the housing such that the foreign substances are sucked into the housing through the suction port, the drum brush comprising a cylindrical drum body and a brush provided on an outer circumferential surface of the drum body; characterized in that it comprises a foreign substance removal pad provided on an inner surface of the housing, the foreign substance removal pad configured to remove foreign substances wound on the drum brush by friction; and an anti-slip pad provided on the outer circumferential surface of the drum body, the anti-slip pad configured to prevent the foreign substances from slipping on the drum body. a cleaner body comprising: a suction force generator configured to generate a suction force, and a foreign substance collection chamber configured to collect foreign substances; and a suction force generator configured to generate a suction force, and a foreign substance collection chamber configured to collect foreign substances; and a suction head connected to the cleaner body, configured to: suck foreign substances on a surface to be cleaned, and guide the foreign substances to the foreign substance collection chamber, wherein the suction head comprises: a housing including a suction port; a drum brush rotatably installed in the housing such that the foreign substances are sucked into the housing through the suction port, the drum brush comprising a cylindrical drum body and a brush provided on an outer circumferential surface of the drum body; characterized in that it comprises a foreign substance removal pad provided on an inner surface of the housing, the foreign substance removal pad configured to remove foreign substances wound on the drum brush by friction; and an anti-slip pad provided on the outer circumferential surface of the drum body, the anti-slip pad configured to prevent the foreign substances from slipping on the drum body. suck foreign substances on a surface to be cleaned, and guide the foreign substances to the foreign substance collection chamber, wherein the suction head comprises: a housing including a suction port; a drum brush rotatably installed in the housing such that the foreign substances are sucked into the housing through the suction port, the drum brush comprising a cylindrical drum body and a brush provided on an outer circumferential surface of the drum body; characterized in that it comprises a foreign substance removal pad provided on an inner surface of the housing, the foreign substance removal pad configured to remove foreign substances wound on the drum brush by friction; and an anti-slip pad provided on the outer circumferential surface of the drum body, the anti-slip pad configured to prevent the foreign substances from slipping on the drum body. a housing including a suction port; a drum brush rotatably installed in the housing such that the foreign substances are sucked into the housing through the suction port, the drum brush comprising a cylindrical drum body and a brush provided on an outer circumferential surface of the drum body; characterized in that it comprises a foreign substance removal pad provided on an inner surface of the housing, the foreign substance removal pad configured to remove foreign substances wound on the drum brush by friction; and an anti-slip pad provided on the outer circumferential surface of the drum body, the anti-slip pad configured to prevent the foreign substances from slipping on the drum body.