The invention discloses a bird and insect repelling device with no need for an extra power supply and relates to the technical field of machinery and solar power generation and concretely relates to a solar power device. The invention aims to provide a mechanical bird and insect repelling device capable of swinging all the time regardless of wind. To achieve the aim, the bird and insect repelling device with no need for an extra power supply comprises a plurality of bird and insect repelling devices, a sun-bath generation panel type device, a micro motor, a rotary long rod and a cable, wherein each bird and insect device is mostly formed by bamboo strips and wooden strips; the lower part of the bird and insect repelling device is firmly inserted into the ground via a long rod, so the device cannot be blown off; the bird and insect repelling rod further comprises a rotary long rod; the long rod is thin and light; a plurality of colorful cloth strips, plastic sheets and plastic bars are tied on the long rod, so the long rod looks colorful and bird and insect repelling effect can be increased; and the bird and insect repelling device is advantaged by requiring no power supplies.