A pet grooming tool includes a handle, a comb member, a push button, a gear rack, and a removal assembly. The removal assembly is rotatably connected to the handle and is movable between an original position and a removal position. The comb member has multiple claws, each has a distal end. A first slit is defined between every two adjacent claws. The removal assembly has a pinion section and multiple removing sections. The pinion section engages with the gear rack. The removing sections are corresponding to the first slits, respectively. when the removal assembly revolves from the original position to the removal position, the multiple removing sections pass through the first slits towards the distal ends of the multiple claws, so as to remove any hair from the claws.