The invention discloses a wind power continuity characteristic description method based on maximum likelihood estimation. According to the wind power continuity characteristic description method based on the maximum likelihood estimation, the fact that the duration time characteristic of different states of wind power is similar to the inverse Gaussian distribution is discovered through analysis by means of the method, meanwhile, it is possible that a wind power plant maintains the same power output state for a long time, and the average time for a constant low power output state or a constant high power output state is longer than the average time for a constant medium power output state; the discovery that the duration time distribution characteristic of the wind power is approximately matched with the inverse Gaussian function distribution curve can make contribution to estimating the duration time of the wind power on a certain power output level and providing important reference for short-term prediction of the wind power. The wind power continuity characteristic description method based on the maximum likelihood estimation has the advantages that the duration time of the wind power on a certain power output level can be estimated, and the important reference for short-term prediction of the wind power is provided; certain guiding significance is provided for arrangement of the planning, operation mode and the like of an electric power system containing wind power.