When traditional insect traps are used for long-term monitoring, it is difficult to collect the quantity of multiple points per day, which bring a lot of labor costs to large-scale monitoring, and it is impossible to update pest information and automatic warning functions in real time. This automatic monitoring trap uses infrared technology to automatically count the number of insects, and puts insect pheromones into the trap to attract male insects to enter. When the male insects enter the collection tank through the lower collection port, the infrared light wave will be blocked, and the device will automatically sense and record the number of insects passing through. By integrating the functions of monitoring and early warning release, this automatic monitoring trap can achieve early prevention, prevent the expansion of disaster areas and reduce agricultural disaster losses.