Infrared detectors play an important role in society today. In this paper，the development of infrared detectors is reviewed，and several kinds of focal plane photo infrared detectors are compared. The demand and the application in the military field of focal plane infrared de-tectors are introduced. The research status of focal plane infrared detectors at home and aboard is present. The properties of several typical focal plane infrared detectors are also present and compared. The problems in making focal plane infrared detectors are discussed and the imaging non-uniformity of focal plane infrared detectors is analyzed. The trends and prospect of focal plane infrared detectors are also summarized.