Abstract: Nondestructive testing (NDT) technologies can detect the surface or inherent defects on the specimen without damaging the physical properties of the tested parts. The NDT technology based on magnetoacoustic tomography with magnetic induction (MAT-MI) uses electromagnetic ultrasonic transducer to stimulate and receive magneto-acoustic (MA) signals generated by the metallic materials, which are used to reconstruct the conductivity distribution inside the specimen. It combines the advantages of high penetration of ultrasonic nondestructive testing and high sensitivity of electromagnetic nondestructive testing. This paper introduces briefly the principle of MAT-MI imaging and summarizes current research progresses of NDT technique based on MAT-MI. Moreover, the feasibility of applying MAT-MI NDT technology to detect defects in the metallic materials in the case of inhomogeneous conductivity distribution is discussed by considering the fact of conductivity anisotropy in most metallic materials, which has a certain impact on the test results.