Medical ear expanding drug applying device

The invention provides a medical ear expanding drug applying device. The medical ear expanding drug applying device comprises expanding plates, a drug injecting head and drug injecting holes, each expanding plate is composed of six arc plates in an annular array, and the expanding plates are connected through multiple tension springs uniformly distributed from top to bottom; expanding rods are arranged in the middles of the inner sides of the expanding plates and are fixedly connected to the inner walls of the expanding plates through disc-shaped supporting blocks arranged at the bottom; the inner ends of the expanding rods penetrate through the side wall of a regular hexahedral framework body in the middle, and each expanding rod corresponds to one surface of the framework body; slide rails are arranged on all the included angles of the inner walls of the framework body. Through the arrangement of the drug injecting head and the drug injecting holes, the drug injecting head is of a hemispherical structure, t