The geosound observation data collected in this paper consist of Lulong and Changlishire, Hebei Province, City of Yingkou, Liaoning Province, City of Chengdu, Sichuan Province; Juxianshire, Shandong Province and Jiexiushire, Shanxi Province.The spectrum and other features of geosound have been obtained by analysis and processing of the data. At last the mechanism of sound source and the possibility regarded as a precursor of earthquake have been discussed briefly.