On the basis of the Digital Dsq water pipe tilt data from the Daqingshan piedmont fault at Hohhot,Hailar,Ulan Hot and Chifeng stations in the north,middle and south sections of Greate Khingan,we applied the statistical method to study the far-field coseismic responses of 200 earthquake events from 2008 to 2018. The delay time and amplitude of seismic surface wave response,and the functional relationship between them and basic physical parameters such as magnitude and epicentral distance are calculated by regression. Through the model calculation,the R value of the simulated magnitude and the actual magnitude is about 0.8 mostly,and the standard error is about 0.3.