A blower, comprising: a housing; a fan arranged in the housing; a motor arranged in the housing and connected to the fan; and a speed regulator assembly configured to control the rotational speed of the motor, wherein the speed regulator assembly comprises a switch coupled to the motor for controlling the operation of the motor, a control member rotatably connected with the housing for controlling the switch and an actuating member rotatably connected with the housing for controlling the switch, the actuating member is configured to move between an off state and an on state, the actuating member is capable of moving to a predefined limit position in the on state, the rotational speed of the motor corresponding to the predefined limit position is a predefined rotational speed, the motor stops running when the actuating member is in the off state, and the motor rotates when the actuating member is in the on state; and wherein the control member comprises a first control state and a second control state, the motor is configured to run at a maximum rotational speed greater than the predefined rotational speed when the control member is in the second control state, and the motor is configured to run at an intermediate speed lower than the maximum rotational speed when the control member is in the first control state, the control member is configured to drive the actuating member to move from the off state to the on state during the movement process from an initial state to the first control state, the actuating member and the control member are operable by a user for controlling the rotational speed of the motor; the actuating member is configured to move to the predefined limit position driven by the control member, wherein the control member is in the first control state when the actuating member reaches the predefined limit position, characterised in that the actuating member is configured not to cross the predefined limit position when the control member switches from the first control state to the second control state. a housing; a fan arranged in the housing; a motor arranged in the housing and connected to the fan; and a speed regulator assembly configured to control the rotational speed of the motor, wherein the speed regulator assembly comprises a switch coupled to the motor for controlling the operation of the motor, a control member rotatably connected with the housing for controlling the switch and an actuating member rotatably connected with the housing for controlling the switch, the actuating member is configured to move between an off state and an on state, the actuating member is capable of moving to a predefined limit position in the on state, the rotational speed of the motor corresponding to the predefined limit position is a predefined rotational speed, the motor stops running when the actuating member is in the off state, and the motor rotates when the actuating member is in the on state; and wherein the control member comprises a first control state and a second control state, the motor is configured to run at a maximum rotational speed greater than the predefined rotational speed when the control member is in the second control state, and the motor is configured to run at an intermediate speed lower than the maximum rotational speed when the control member is in the first control state, the control member is configured to drive the actuating member to move from the off state to the on state during the movement process from an initial state to the first control state, the actuating member and the control member are operable by a user for controlling the rotational speed of the motor; the actuating member is configured to move to the predefined limit position driven by the control member, wherein the control member is in the first control state when the actuating member reaches the predefined limit position, characterised in that the actuating member is configured not to cross the predefined limit position when the control member switches from the first control state to the second control state.