The invention discloses a self-driving system for preventing birds from peaking economic crops and relates to the field of machinery and solar power generation. Specifically speaking, the system belongs to a solar energy device. The purpose of the invention is to provide a swinging mechanical bird repelling device; to achieve the purpose, the invention mainly comprises components such as one or more bird repelling devices, a photoelectric energy conversion flat, a low-power machine, a rotational rod-like object, and corresponding wires. The bird repelling device is mainly made of sundries such as bamboo canes or battens and the lower part is inserted to the ground by a rod-like object, which is firm and not easy to be blown down; the bird repelling device also comprises a rotational rod-like object which is thin and light with multiple colorful strips, plastic sheets and plastic strips; the whole body is colorful so as to enhance the bird repelling effect. The system has the advantages such as automatic bird repelling, long-term operation and low cost.