Frequency-adjustable animal repelling device

The frequency-adjustable animal repelling device comprises a supporting rod, a machine frame, a coil, a positioning support, a connecting base and two binding posts, an adjusting rod is arranged at one end of the positioning support, a first metal elastic piece is fixed to the lower end of the adjusting rod, and a first capacitor, a second capacitor and a third capacitor are fixed to the side edge of the connecting base. The first capacitor, the second capacitor and the third capacitor are all connected with the coil in parallel, the first capacitor is connected with a first change-over switch in series, the second capacitor is connected with a second change-over switch in series, an elastic piece base is fixed above the connecting base, a second metal elastic piece is fixed to the elastic piece base, and the other end of the second metal elastic piece is connected with a third metal elastic piece and an armature. The other end of the armature is connected with an L-shaped rod, a bell clapper is fixed to the