Abstract:A research on the track of Typhoon Sinlaku and the course of prediction,and analysis of the argument of some difficulty on forecasting anomalous moving track are conducted. Many factors indicated that when the steering flow is too weak,typhoons like Sinlaku sometimes stop,turn and its moving track,then a careful analysis should be made and careful observation of binary cyclones should also been done. Therefore we can say,vapor imagery is an useful tool.