The invention relates to a method for detecting the interruption duration of electronic equipment. The method comprises the following steps that: a curve model of relation between linear comprehensive values of readings of temperature sensors and time is established; after electrification, the temperature sensors arranged on the electronic equipment collect temperature initial values, and the temperature initial values are transmitted to a microprocessor through a analog-to-digital conversion module; the current linear comprehensive value of the readings of the temperature sensors of the electronic equipment is calculated according to the current electrification time and the stored curve model and then is stored to be used as a reference for calculating the following interruption duration; and when the powered-off electronic equipment is electrified again, the temperature sensors collect the temperature initial values again, the microprocessor reads the previously stored linear comprehensive value of the readings of the temperature sensors, calculates to obtain the current interruption duration and stores the current interruption duration, and the current linear comprehensive value of the readings of the temperature sensors is calculated according to the current electrification time and is utilized as a reference for calculating the following interruption duration. The method provided by the invention is not limited by the discharge time, is accurate in timing and does not influence the performance of the electronic equipment.