Considering the problem of tracking hypersonic vehicle in detection blind zone, a Bayesian handover method based on multiple-hypothesis motion models is proposed. According to the priori information of target motion, this method firstly models the multiple-hypothesis of the model parameters in detection blind zone. Then the Bayesian theory is used to express the motion state of the target in the form of probability. The probability distribution of the target is approximately calculated by Monte-Carlo sampling, and the searched space and wave arrangements can be determined consequently. The simulations show that the proposed algorithm has a high probability of success for handing-off targets with different maneuverability, whose performance is significantly better than that of the traditional algorithm and it can achieve the target handover.