The invention discloses a method for stabilizing micro-grid power fluctuation by utilizing a controllable load. Aiming at the characteristics of an adjustable load, the slow change of generated power is responded through a day-ahead plan of the adjustable load, and therefore a curve of the controllable load tends to be the same as a day-ahead predicted generating curve. When the method is carried out, an instantaneous abrupt change of the generated power is responded through the real time adjustment of an interruptible load. An effective, practical and scientific micro-grid power fluctuation solution is provided by the invention, the solution can be popularized to solve other power fluctuation problems of distributed intermittent energy, and the solution can be popularized to solve power fluctuation problems of large-scale wind power plants and large-scale photovoltaic power stations, and popularization and application of clean energy is promoted.