The research of the competition information started in the eighties of the 20th century, one that is with global market competition sharpened and the development at full speed of the social informationization, the competition information has already become following talent, technology and fund, the fourth leading key element which enterprises survive and develop. Keen competition in market lay competition information marketing among enterprise it employs to be importance more and more too, people's degree of attention to competition information is thereupon improved too. This text explains the production of the competition information, and the characteristic in marketing emphatically, the function, the method, the meaning and competing for the research current situation of the information both at home and abroad at present.