Carbon steel samples were packaged in bags filled with nitrogen and air respectively; high-low temperature and hot-humid tests were carried out on the packaged samples; and the corrosion rate of the samples was measured to evaluate the protection property of nitrogen-filled packaging technology. The results showed that the〖JP2〗 corrosion rate of sample protected by nitrogen-filled packaging technology is much slower, and the average corrosion rate is in a order lower than the standard of mild corrosion(NACE RP-0775-91). The barrier property of nitrogen-filled packaging technology is perfect, the oxygen concentration in the packaging bag is stable (＜0.1%). It was concluded that the nitrogen-filled packaging technology can provide good protection for equipments.