Abstract: Several experiments of the physical initialization in the numerical prediction of typhoons, by using P.R. Julian’s scheme (1984) with the operational tropical limited area operational NWP model, are conducted. The results show that not only the initial state (stream and rainfall rate) in the areas of the typhoon, the monsoon depression or the subtropic high, but also the predictions of the strength and the track of the typhoon can be largely improved by the use of physical initialization, which proved to be a effective and feasible method in the tropical NWPs.