Abstract: The study of wind power prediction technology has already begun in 1980’s. More and more forecasting methods were invented, and the accuracy was continuously improved. In the rapid development of global wind power industry nowadays, the early prediction system based on a single method could not meet the needs of modern industry, the combination forecast is a new way that slowly appeared in the researches over the world. Through a large number of practical application at home and abroad, we fi nd that the accuracy of combination method has improved dramatically comparing to a single method, and point out the direction of the development in the wind power prediction technology.