Abstract: Based on the Local Analysis and Prediction System LAPS introduced by Wuhan Institute of Heavy Rain.Using the ground,sounding conventional,Intensive observation and more than a new generation Doppler radar data in South China and the Yangtze River from 2008 to 2010 collected by the 973 experiments.A variety of LAPS localization testing was carried out by designing and operating many LAPS data integration solutions.It was shown that,using NCEP reanalysis data as background field,the observational data integration of LAPS would improve the NCEP reanalysis field and abtain analysis field which closer to live observations.The analysis field merged by multiple observation data was superior to that merged by single observation data.Based on Multi-radar reflectivity factor puzzles,the wind field was compared between the LAPS merged by a variety of observational data and NCEP reanalysis data .The results showed that,the configuration of LAPS analysis wind field and Multi-radar-reflecting echo puzzle was more reasonable.