Abstract: According to neural network theoretic,a BP network prediction model is made based on the back propagation training functions in the MATLAB toolbox.Then the impression of the model is inspected by the analysis on the earthquake data of Shanxi.The study shows that,the BP prediction model can be used to forecasting earthquake,and its operation is easy.So BP network prediction model is an effective tool for the detection of earthquake,and it may have a wide application prospects.