Searching tracking and monitoring of low-small and slow targets automatically has important significance.As the level of automation of low-small and slow targets photoelectric detection now is low,a kind of new automatic control method is provided.After the radar system finds the target and gives its predicted geographic location,the sensor automatic control system in the electro-optical system will automatically control the view field of visible light sensor and infrared sensor to display the targets in the image at an appropriate size,and it will also auto focus and make the target clear;the movement automatic control system of the electro-optical system will control the turret to automatically aim at the target prediction point,control image processor detection targets,and pull the target to the center of the image for display,continuous tracking and recognition.The tests results show that the control method can discover,track and monitor various low-small and slow targets under various weather conditions,and work fully automatically.