An animal feces suction apparatus includes a tubular body having a stretching portion and a connection portion, a feces suction channel formed in the tubular body, a plurality of liquid channels disposed in a tube wall of the tubular body and formed with a plurality of liquid outlets in the stretching portion, an aspirator connected to the connection portion and communicated with the feces suction channel so as to generate a suction force within the feces suction channel, and a liquid supplying device connected to the connection portion and communicated with the liquid channels so as to provide a liquid to a large intestine of an animal via the liquid outlets. The stretching portion is stretched into the large intestine of the animal and transmits the liquid so as to soften the feces, and the feces is then sucked out from the large intestine through the feces suction channel by the suction force.
