Аннотация:We briefly review main observational properties of fast radio bursts (FRBs) and discuss two most popular hypothesis for the explanation of these puzzling intense millisecond radio flares. FRBs are likely to happen on extragalactic distances, and their rate on the sky is about a few thousand per day. Two leading scenarios describing these events include hyperflares of magnetars and supergiant pulses of young energetic radio pulsars.