Abstract: In this article we made a statistical research on strong northeast monsoon along the coast of Guangdong province caused by cold air during the decade from 1988 to 1997. Several factors with high relevance to strong northeast monsoon are selected to make out the optimal combinations. 24 probability forecast equations are designed based on monthly and forecast period to construct the probability forecast technique for strong northeast monsoon forecast during winter and spring. With rational selection of predictors, scientific processing and fully objective and quantitative computation, the forecast method proves to be valuable in application in forecast practice.