With the worlds energy, climate and environment problems becoming even serious, it is urgent to find suitable alternative energy sources. Hydrogen has attracted considerable attention because of its abundant reserves, pollution-free, high energy density, which can provide an efficient and stable clean energy source. How to store hydrogen safely and efficiently is a barrier for its applications in transportation. Boron-nitrogen-hydrogen (B-N-H) compounds have attracted tremendous academic attention due to their high hydrogen storage density and mild hydrogen release condition. Ammonia borane (NH3BH3, AB), as a representative of B-N-H compounds with 19.6 wt% hydrogen capacity, moderate thermal stability and low hydrogen release temperature, has been considered to be the most promising hydrogen storage materials. Metal amidoborane (MAB), prepared through replacing one of the hydrogen atoms bonded N in AB by a metal atom, can effectively inhibit the formation of borazine. A lot of theoretical and experimental research has been conducted to improve the performance of these compounds for lowering the hydrogen release temperature, reducing the induction time and decreasing volatile harmful gases borazine, ammonia and diborane. Based on the special dihydrogen bond existing in the ammonia borane, the synthetic methods and dehydrogenation properties of ammonia borane and metal amidoborane with the annexing agent are summarized in this review. In the last part, the regeneration and applications are prospected.