<p>Understanding the magnetic induction intensity distribution of current-carrying carbon fiber composites is of great significance for structural health monitoring. Here we report analytical and numerical modeling on magnetic induction intensity of carbon fiber plain woven laminates. The influences of current magnitude and current injection modes on the magnetic induction distribution have been obtained from modeling and verified with the tests. We found there is a linear relationship between magnetic induction intensity and current in the low-current range, while the magnetic induction intensity exhibited significant anisotropy under different current injection modes. The magnetic induction intensity changes with the current injection directions and composite structures, i.e., the electric conductive networks. It is believed that the correlation between the microscopic structure and the magnetic induction intensity could be used for non-contact structure health monitoring.</p>