Abstract: In order to substitute non-polarizable electrode with lead electrode and solve the stability problem of earth electric field observation in seashore area,we have performed two kinds observational comparison,which is shallow burying lead electrode with non-polarizable electrode and deep burying lead electrode with shallow burying lead electrode.The results show that the observation data of lead electrode are consistent with that of non-polarizable electrode in short period,and the stability of the data from deep burying lead electrode excels solid non-polarizable electrode,and its inherent quality also excels shallow burying lead electrode.