The Yellow River Delta is very important to our country in economy,agriculture and so on.To study how remote sensing data could be used to evaluate soil moisture distribution in the Yellow River Delta,a remote sensing TM data model for soil moisture was established based on all band Landsat-5 TM images,field investigation of soil moisture regimes and other related data with the aid of the research technique combining remote sensing,mathematics and modeling,the pixel decomposition method to extract soil moisture spectrum information by removing interference of vegetation,the soil moisture spectrum method and the regression analysis.The TM data model was further verified against the study area.Results indicate that the findings conform to the reality.The TM data model is thought to be applicable and workable to monitoring and evaluating of soil moisture distribution.