Abstract: Through research theory and technique of the electricity penetration method between two laneway,it have been optimized that 6 kind the monopole dipole et al electricity penetration methods of exploration electrical properties diversification of the roof and floor of working face and dipole dipole electricity penetration method of exploration electrical properties diversification of the coal.A suit of the new technic has been provided for exploration water bearing structure and water conducting structure of the roof and floor in working face.