A diode array-based digitized miniature ultra-low-power-consumption impact monitoring system, comprising a miniature sensor array interface, a passive band-pass filter array, a diode array, a digital conversion and management module, an on-board bus communication module, a monitoring data storage module, a self-powering module, and a miniature communication and power supply interface, wherein the miniature sensor array interface, the passive band-pass filter array, the diode array, and the digital conversion and management module are sequentially connected, the digital conversion and management module is bidirectionally connected to the on-board bus communication module, the digital conversion and management module is bidirectionally connected to the monitoring data storage module, the on-board bus communication module is bidirectionally connected to the miniature communication and power supply interface, the on-board bus communication module, the monitoring data storage module, and the digital conversion and management module are connected to the self-powering module respectively, and the self-powering module is connected to the miniature communication and power supply interface.