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Based on the experimental data of multi-directional geo-electric field observation in FengNing station, the time series trend, periodic characteristics and correlation of different direction data are carried out in this paper. The results show that: 1. There are not obvious regular temporal characteristics in different measurement directions. The temporal changes in different direction are anisotropy. 2. The value of spontaneous electric field in different directions is different and has not obvious seasonal characteristics. The value of telluric field is similar in different direction, which is higher in summer and lower in winter. 3. Frequency-spectrum analysis suggests that the dominant period of telluric field is mainly 12 hours, 8hours, 24hours or 6hours. There is no obvious period of spontaneous electric field. 4. For spontaneous electric field, the correlation between different directions is best, while there is a good correlation between two opposite directions for telluric field. With the increasing of observational data number, the correlation will be worse.

Characteristics Analysis of Multi-Directional Geo-Electric Field Observation Data in FengNing Area