This paper presents the measurement strategy of Electrical Resistance Tomography (ERT) for a system using underground investigation and comparison with other application such as conducting vessel pipe and concrete. Measurement of electrical strategy commonly used are adjacent strategy, opposite strategy, diagonal strategy and bounding conducting. This paper also discussed in measurement strategy for underground such as the Wenner-alpha configuration, Pole-Dipole array, cross bore-hole ERT and pseudo-section. This paper focuses on the principle and advantages measurement strategy for underground investigation and for other system such as conducting vessel pipe. The soil resistivity testing was described for related with rooted tree detection in soil.