The invention discloses a pipe connector for a toilet bowl. The pipe connector comprises a male connector body and a female connector body in butt joint with the male connector body. The male connector body and the female connector body are matched connected with a plurality of grooves through a plurality of protrusions respectively. Each protrusion and each groove are hollow and are used for allowing water for the toilet bowl, air and dirty excreta to pass respectively. The pipe connector has the beneficial effects that by means of the structural design in two clamping seats of the connector, various pipes are in butt joint or are separated at the same time, and mutual interference of circuits, air pipes and dirt pipes is avoided; inserting connection is achieved, and rapidness and convenience are achieved; by means of fastening devices such as buckles or nut covers or sealing gaskets, outward leaking of liquid and air is effectively avoided; conveying of pipes different in size and different media is achieved through the whole connector, and by means of the protrusions and the grooves, butt joint and separation are easy and convenient; and through one casing pipe, multiple pipes are tidied uniformly, the pipes can achieve the minimum size under the condition of meeting requirements, and space is effectively utilized.