A blower, comprising: a blower body comprising a housing, an impeller arranged inside the housing and a motor arranged in the housing to drive the impeller to rotate, wherein the blower body comprises an air inlet and an air outlet; a base; and a regulating mechanism, wherein the blower body is mounted on the base via the regulating mechanism, the regulating mechanism comprises a coupling member, a regulating knob and a resetting member, and the blower body is rotatably mounted on the base via the coupling member, the regulating knob is arranged on the base and cooperates with the coupling member to limit the coupling member, and the resetting member is arranged on the base and cooperates with the regulating knob to cause the regulating knob to reset, such that the direction of the air flow may be adjusted by regulating the direction of the blower body without moving the base, characterized in that the blower further comprises at least two open grooves disposed circumferentially at the end portion of the coupling member cooperating with the base, and a plurality of limiting blocks cooperating with the open grooves are disposed at the end of the regulating knob cooperating with the coupling member, wherein the resetting member is a spring with a length direction thereof being parallel to an axial line of the coupling member, a baffle is disposed on the base proximal to the end portion of the coupling member where the open grooves are disposed, the spring and the coupling member are respectively arranged on two sides of the baffle, two ends of the spring are respectively fixed to the regulating knob and the baffle, and the limiting blocks cooperate with the open grooves on the coupling member by crossing the baffle. a blower body comprising a housing, an impeller arranged inside the housing and a motor arranged in the housing to drive the impeller to rotate, wherein the blower body comprises an air inlet and an air outlet; a base; and a regulating mechanism, wherein the blower body is mounted on the base via the regulating mechanism, the regulating mechanism comprises a coupling member, a regulating knob and a resetting member, and the blower body is rotatably mounted on the base via the coupling member, the regulating knob is arranged on the base and cooperates with the coupling member to limit the coupling member, and the resetting member is arranged on the base and cooperates with the regulating knob to cause the regulating knob to reset, such that the direction of the air flow may be adjusted by regulating the direction of the blower body without moving the base, characterized in that the blower further comprises at least two open grooves disposed circumferentially at the end portion of the coupling member cooperating with the base, and a plurality of limiting blocks cooperating with the open grooves are disposed at the end of the regulating knob cooperating with the coupling member, wherein the resetting member is a spring with a length direction thereof being parallel to an axial line of the coupling member, a baffle is disposed on the base proximal to the end portion of the coupling member where the open grooves are disposed, the spring and the coupling member are respectively arranged on two sides of the baffle, two ends of the spring are respectively fixed to the regulating knob and the baffle, and the limiting blocks cooperate with the open grooves on the coupling member by crossing the baffle.