Injection model for nursing practical training

The utility model discloses an injection model for nursing practical training, which comprises a simulation arm skin, the inner side of the simulation arm skin is fixedly connected with a muscle layer, the middle position of one end of the muscle layer is transversely provided with a first supporting rod, and the two ends of the first supporting rod are fixedly connected with limiting rings. Four second supporting rods are fixedly connected to the annular peripheries of the two limiting rings in a circumferential array mode, supporting bases are fixedly connected to the top ends of the four second supporting rods, three air bags are fixedly connected to the top of each supporting base, and one ends of every three air bags are jointly connected with a four-way pipe; the bottom ends of the four-way pipes are jointly connected with a five-way pipe, one end of the five-way pipe is connected with an L-shaped connecting pipe, the bottom of the piston is fixedly connected with a pull rod, and through the use of the