The invention provides a power module capable of displaying power failure time. The power module capable of displaying the power failure time comprises a single chip computer, and is characterized by further comprising an electronic ink bottle, an AC/DC (alternating current/direct current) module and an output management circuit, which are respectively connected with the single chip computer, wherein an input end of the AC/DC module is connected with a power supply system, an output end of the AC/DC module is connected with an input end of the output management circuit, an output end of the output management circuit is connected with a load, and an output end of the single chip computer is connected with the electronic ink bottle, and used to drive the electronic ink bottle to refresh display of current time. The power module capable of displaying the power failure time uses the electronic ink bottle to obtain the losing time of the power module.