The invention relates to a bird dispeller, comprising a sleeve that sleeves a wire, two pairs of balance hammers arranged at the two ends of the lower end of the sleeve, a support mounted on the sleeve, a top rack in frame structure and which is arranged at the top of the support, brush arms arranged on the top rack, knock hammers arranged on the support, a rotary cylinder arranged on the supporton one side of the knock hammers, sound plates arranged on the rotary cylinder and in intermittent contact with the knock hammers, and an air whistle arranged on the support. By using the bird dispeller, the defect that a birder dispeller is arranged across two wires is avoided, and it is also avoided that electricity connection in moist days due to the bird dispeller being arranged across causesfailure.