Abstract: In this paper, a field test and data analysis method for S-band China mobile multimedia broadcasting(CMMB) signal coverage is presented.The test scene and experiment model of related trial,as well as the data analysis process are introduced.During the data analysis process,ICS Telecom frequency plan software is used to estimate the coverage firstly. And then measured data is imported to ICS Telecom software after being screened.Finally, both estimated data and measured data are compared with statistical method,and prediction errors of each model are visualized in MapInfo software.By this method,the most precise one can be found among several S-band radio propagation models in similar terrains and propagation scenarios.The method can provide reference for the S-band networking planning of CMMB service.