Laser radar is one of the leading imaging technologies. Three dimensional imaging laser radar based on the Geiger-mode APD focal plane array becomes a hot research topic at home and abroad because of its high sensitivity, high range resolution and high imaging efficiency. The structure and performance of the Geiger-mode APD array in the Massachusetts Institute of Technology Lincoln laboratory are introduced. The APD array has single photon detection ability. The bridge bonding increases the integration of the APD array. The ranging information can be directly read out from each pixel that has independent timing circuit. At the same time, the article also gives the newest research achievements of the APD array laser radar in target recognition in disguise and three-dimensional imaging for wide area terrain. The purpose is to provide reference for domestic researchers in laser radar researching and sensor selection.