In the real-time visual display, because of the shortage of traditional AIS linear interpolation, in order to make the target trajectory smoothing, this paper gives a interpolation method which consider the speed, course and other movement information of the target. This method can give the target trajectory which match the rate of the view display during the interpolation period through building movement model of the target. At the same time there are some reasons make AIS information missing and adjacent AIS information spanning large time, such as the problem of AIS station transmit, the problem of data receive and some other reason. Base on above-mentioned interpolation method, this paper also gives a method to predict the unknown AIS information. In the end this paper prove the method by real AIS information test. The test shows that the method can give the more real trajectory of the target and solve the problem of the AIS information spanning large time effectively.