In this study, a magnetic flux leakage (MFL) method which is suitable for the continuum ferromagnetic structure and verified by the previous studies was applied for the rail inspection. A prototype of multi-channel MFL sensor head was fabricated using Hall sensors and permanent magnets. To verify the feasibility of the proposed technique, a series of experiments was performed. 6 real rail specimens with several types of damage were prepared, and scanned by using the MFL sensor head to measure the magnetic flux density of the specimen. In the experimental result, MFL technique can detect successfully the local damage on vertical and diagonal direction. Through the further study, it is expected that MFL based nondestructive evaluation technique can be used effectively for detecting local faults of railroad tracks by convergence of the suitable transportation equipment and IT technology.