Abstract: Considering that the traditional air target threat evaluating methods are difficult to reflect the dynamic problems in actual combat, evaluating and sequencing of air multi-target threat based on intuitionistic fuzzy entropy (IFE) and intuitionistic fuzzy sets is applied to the multi-target threat problems. The target attribute weight is calculated by an IFE algorithm. And time series weight is gained by the Poisson distribution method based on multi-times data. Finally, an example indicates that the method is reasonable and effective.