The utility model relates to and discloses a conduit cleaning robot comprising a chassis (1), a lifting arm (2) arranged at the upper part of the chassis, a cleaning head (3) which is connected on the lifting arm and is changeable, an apron wheel travel mechanism (4) arranged at the bottom of the chassis, a monitor lighting unit (5) positioned on the chassis and a hair brush (6) positioned on the cleaning head. The cleaning head comprises a pneumatic motor, a linked rotary shaft and the hair brush used for cleaning on the rotary shaft. The monitor unit and the control air valve (9) of the chassis travel and the pneumatic motor are connected with a far-end monitoring device through a cable. The conduit cleaning robot is suitable for cleaning various pipes with complicated situations without any blind angle. The conduit cleaning robot can thoroughly clear up sundries, dust and pathogenic bacteria.