By using non-hydrostatic WRF (Weather Research Forecast) model, the landfall process of typhoon Fungwong are simulated in high resolution. The simulation is triple nesting with the highest resolution of 3 km and integrated 120 hours (5 days). The authors also carried out careful comparison between the simulation results and the real situation (the conventional and unconventional observational data). The results show that the WRF model successfully simulated the development and landfall process of typhoon Fungwong, the simulated path is quite consistent with the observed one. At the same time the model also successfully showed the evolution process and the feature of main radar echo in the whole simulation period, the simulation is successful. Further more, with the high-resolution simulated data the authors carried out diagnosis analysis of |Q| to the landing process of typhoon. It shows that the abnormal value area of |Q| always cover the rainfall area in the whole period, they have the similar spatial distributions and time evolution trends. And |Q| shows strong signals in the rainfall area and shows weak ones in the non-rainfall area. To sum up, |Q| has good indicative meanings to forecast of the strong precipitation.