The invention relates to a planned outage time optimization method based on user experience improvement. The planned outage time optimization method evaluates power consumption experience of a user byselecting three items, namely the total power failure duration, whether recent frequent power failure occurs or not and the peak power failure time proportion. In order to describe the user experience carefully, the planned outage time optimization method describes the user experience through three levels of small influence, large influence and serious influence, and uses differentiated thresholds for dividing the size and severity of the influence, wherein the three levels are respectively expressed by sums. According to the invention, the customer power consumption experience is taken as aconsideration factor for optimizing the planned power failure, and the adverse effect of the power failure on the customer experience is reduced by adjusting the date of the planned power failure, thepower failure start time and the power failure duration.