Artificial anus expansion training instrument

The utility model discloses an artificial anus expansion training instrument. The artificial anus expansion training instrument comprises a telescopic air bag and a plurality of arc-shaped telescopic pieces, wherein one end of each arc-shaped telescopic piece is fixed to the telescopic air bag, the arc-shaped telescopic pieces are evenly distributed around the telescopic air bag, a cone shape is defined by the arc-shaped telescopic pieces, an air inlet pipe and an air outlet pipe are connected to the telescopic air bag, and a manual inflating bag is connected to the tail end of the air inlet pipe. The artificial anus expansion training instrument has the advantages that the structure is simple; operation is convenient; the front portions of the arc-shaped telescopic pieces and the telescopic air bag can be inserted into the anus conveniently, and when the artificial anus is expanded, force is exerted on all portions of the artificial anus evenly; due to the fact that a buffer spring is arranged between each arc-shaped telescopic piece and the telescopic air bag, stress of the arc-shaped telescopic pieces during expansion can be buffered, force exerted on the artificial anus is increased gradually instead of being increased suddenly, and the artificial anus is protected.