Digital low-light-level (LLL) devices, as the core devices of the new generation of LLL night vision equipment, have been paid more attention by mang countries because of their advantages of digital output compared with traditional vacuum LLL devices. The research statuses of low illumination charge-coupled devices (CCD)/complementary metal oxide semiconductor (CMOS), scientific CMOS, image intensified CCD/CMOS, electron multiplying CCD, and electron bombarded active pixel sensor (APS)/CCD digital LLL devices were reviewed, and the application of digital LLL devices was analyzed. Finally, the development trends of LLL technology and digital LLL devices were proposed.