Micro digital beacon device as well as monitoring system and method for rapidly finding moving target

The invention discloses a micro digital beacon device which is worn by a moving target, and a monitoring system and method for rapidly finding the moving target. The micro digital beacon device comprises a shell, a control circuit and energy management module assembly, a wearable sensor and a wireless transceiving module, wherein the shell can be worn by the moving target; the control circuit and energy management module assembly, the wearable sensor and the wireless transceiving module are arranged inside the shell. The monitoring system comprises the micro digital beacon device, a social infrastructure receiver, a social assistance receiver, a monitor terminal, an intelligent terminal and a comprehensive service center. The micro digital beacon device which is small in size and low in radiation can be worn by persons under guardianship, such as infants, the old or juveniles, and the persons under guardianship, who lose touch with monitors, can be rapidly found. The monitoring system forms a huge network system which consists of the ambient social resources and the micro digital beacon device, small investment is achieved, the finding efficiency is high, and the persons under guardianship, movable articles and assets or pets can be effectively monitored and managed.