Abstract: Introduced the EH4 conductivity imaging system and its features, and discussed its detection depth.Discussed the current technology of geophysical prospecting method in the geological survey in Southwest China, analyzed the pros and cons of various methods and its scope.EH4 conductivity imaging system in deep detection of buried structures in Dehong prefecture of Yunnan province, Wuding mineral surveys, find water and drought resistance of Yunnan Tengchong volcano detection applications, proved using EH4 conductivity imaging system on feasibility of geological survey in the Southwest.

Key words: EH4 conductivity imaging system, Structure, geological prospecting, looking for water