In recent years, besides higher spatial resolution, higher temporal resolution and higher spectral resolution, extending the effective working time of satellite platform based aerospace paid much attention. And Low-light-level(LLL) remote sensing technology in visible band is one of the ways to achieve the goal. LLL remote-sensing camera has become a novel subject for the development of aerospace optical remote-sensing payloads. In this manuscript, first the status quo and trend of LLL remote sensing technology is made a comprehensive introduction. After that, centering on the crucial technique to realize the low-light-level sensing, several different implementation ways are made a comparison both from the theoretical viewpoint and experiment demonstration. Finally, some advices are given on how to develop aerospace LLL remote sensing techniques based on the existing research results.