The invention relates to the technical field of mechanical manufacturing, in particular to a pipe robot. The pipe robot includes a spindle and a controller. The outer surface of the spindle is evenlyprovided with three track devices in the peripheral direction. A foreign object removal shovel is arranged at one end of the spindle. The other end of the spindle is provided with a position adjustment device including a tail housing and a motor frame. A motor is set on the motor frame, and a driving gear is set on the output shaft of the motor. One side of the driving gear is provided with a driven gear, the center of the driven gear is provided with a screw in a matched manner, the screw is provided with a nut holder, and one side of the nut holder is fixedly connected with a driver. The output shaft of the motor away from one end of the motor is provided with a spindle frame and position adjustment rods are set between the three track devices and the driver. The pipe robot has a high stability when moving in a pipe, and can operate in pipes of different diameter sizes.