Abstract: An emergency protection system for UPS, including a power module for supplying power; a power control module for controlling the transmission of power; a power status detection module for detecting whether an abnormality in the power has occurred; a voltage change detection module for detecting whether a sudden change in the power has occurred; a timing detection module for detecting, in the event of an abnormality in the power, whether the duration of no sudden changes in power exceeds a timing length; a micro-control module for signal reception and module control; a power distribution control module for supplying power to an energy storage module and transmitting the power released by the energy storage module, and for high-frequency power regulation processing of the power released by the energy storage module; and an output processing module for superimposing, inverting, and outputting power.