The invention discloses an insect repelling device based on microorganisms, which comprises an upper functional module and a lower walking module, the functional module is connected with the walking module through an upper telescopic module, and the functional module includes an infrared imaging module for detecting pests , a wind direction sensor for detecting wind direction, a wind speed sensor for detecting wind speed, a biological insect repellent module for expelling pests, a storage module for storing pest information database and data processing formulas, an operation module for calculation, A power supply module and a control module that provide electric energy for the insect repellent device, and the control module is respectively connected with the upper telescopic module, infrared imaging module, wind direction sensor, wind speed sensor, biological insect repellent module, walking module, storage module, computing module and power supply The modules are connected. The intelligent insect repelling device of the present invention is ingenious in design, easy to use, has little impact on the environment and ecology, has a high degree of intelligence, and is suitable for popularization and use in the field.