Ladar is one of the leading imaging technologies,it is especially important in infrared band.Because the echo of ladar which has a large detector array is very weak and the detector′s sensitivity and some other technical performance in infrared band are low,ladar′s imaging range is usually not long and its application is restricted.An electron bombarded active pixel sensor（EBAPS）which is well fit for weak light detection is invented by the United States Intevac company.The response spectral of EBAPS is between 950 nm and 1650 nm.The United Stated Army Research Laboratory （ARL）and other units use EBAPS in ladar development.The principle of EBAPS and the characteristics of its three generations of cameras are briefly described.More attention is paid on the application of EBAPS in ladar.The purpose of this paper is to provide a reference for the development of our own ladar.