The invention belongs to the technical field of power system control, and specifically relates to an emergency energy management strategy suitable for a light-storage-type building microgrid, and the strategy includes two conditions of scheduled outage and non-scheduled outage. Under the scheduled outage condition, the strategy is formed by an optimization model and a rolling optimization strategy, in the optimization model, two aspects of reducing loss of the users brought by outage and maintaining power supply to important loads during the outage period are taken into account, and a weighting factor is introduced to weigh the important degree of the two aspects. In the rolling optimization strategy, the photovoltaic actual output value and the photovoltaic predicted value are continuously updated in order to reduce the influence of the prediction error on the result. Under the non-scheduled outage condition, that power supply to important loads is preferentially considered is taken as the principle to make a real-time emergency scheme, by determining the photovoltaic predicted value at a certain moment, the controllable load input amount at the moment is dynamically decided. According to the invention, the controllable load input amount is adjusted timely, loss of the users brought by outage is effectively reduced, and power supply to important loads during the outage period is maintained.