The invention discloses a handheld dust sucking brush. The handheld dust sucking brush comprises a collecting device, a connecting hose, a handheld device, a dust sucking pipe and a brush head which are connected in sequence, and further comprises a switch and a power supply wire; a motor is mounted in the handheld device; after a rotating shaft of the motor penetrates through the dust sucking pipe, the tail end of the rotating shaft is mounted in a center hole of a spoke in the brush head; fan blades for exhausting are mounted at one section, positioned on the inner side of the handheld device, of the rotating shaft of the motor; and a brush disc is arranged on the edge of the spoke, and is provided with a brush. Compared with a traditional dust sucker, the handheld dust sucking brush is smaller, adds a cleaning function, and is more convenient to remove dust during working. The handheld dust sucking brush is simple in structure and convenient to manufacture. The brush head adopts a wheel structure, can achieve a cleaning effect, and cannot influence suction of the dust by the device. A transmission device adopts an extension form to achieve adjustment.