The opto-electronic countermeasure is an important part of the electronic countermeasure.With the fast development of military opto-electronic equipments,the status of opto-electronic countermeasure becomes higher and its influence is more prominent.Firstly,the system of the opto-electronic countermeasure is discussed from the opto-electronic reconnaissance,opto-electronic jamming,opto-electronic anti-reconnaissance and op to-electronic anti-jamming.Then,combining the technology development with the typical battle,the development history of the opto-electronic countermeasure is introduced from the visible countermeasure,infrared countermea sure and laser countermeasure.Finally,the research focus and future trends in the field of opto-electronic counter measure are summarized comprehensively.The research results are helpful for understanding and grasping the op to-electronic countermeasure technologies.