Abstract: Innovative design of a new type of acoustooptic combination farmland bird repellent device was introduced.The device combined advantages of laser scanning bird repelling with random speech bird repelling，and a rotating lens combined with laser was designed to form a continuous laser flash for bird repelling，so as to expand area of bird repelling and enhance effect of bird repelling.In the field（55 m×75 m）bird repellent experiment，it was found that number of bird residence decreased by 29.5% compared with that before using（5.28 birds）.Statistical analysis showed that there was a significant difference（P<0.05）.Innovative design of new farmland bird repellent device could play a positive role in protection of planting industry，reducing loss of bird damage and process of agricultural production.