Abstract: The electrical impedance distribution of carbon fiber reinforced resin composites (CFRP) with weaving technology has the characteristics of anisotropy, heterogeneity and complex geometric structure. Establishing the electrical impedance distribution model is the key joint to obtain the defect and fatigue damage information of CFRP in the braiding process by using electromagnetic eddy current nondestructive testing technology. Based on the theory of electrical impedance tensor modeling, the method of characterizing the electrical characteristics of the multi-layer braided structure CFRP two-dimensional plane was established, and a simplified electrical impedance distribution model of the braided CFRP was established, thereby realizing the accurate and fast finite element analysis of the electromagnetic properties of the braided CFRP. Based on the finite element simulation, the electromagnetic nondestructive testing of plain weave CFRP was designed by designing a dual-air rotating coil electromagnetic sensor. The polar coordinate chart of the impedance was used to describe the impedance change trend of the measured material in different directions. The correctness of the finite element modeling was proved by experiment. Finally, the proposed modeling method was used to simulate the detection effect of the double air rotating coil sensor on the structural defects and cyclic load fatigue of the plain weave CFRP.