Nitrided iron pots and pans are generally not harmful to the human body. Nitrided iron pots usually refers to cooked iron pots, due to reactive nitrogen atoms at high temperatures, the formation of a chemically stable compound on the surface of the iron pot, which can effectively solve the problem of rusting iron pots, but also increase the durability of iron pots and pans hardness, and this compound is generally not harmful to the human body. Nitrided iron pot because there is a layer of hard protective layer, so it is not easy to oxidize, rust, and iron ions or other heavy metal release is relatively reduced, basically no harm to the human body. Even if the use of time is too long, resulting in the destruction of the protective film, there may be a small amount of heavy metal release, but the amount of release is greatly reduced, the human body is also basically harmless. If the raw iron pot, not after nitriding treatment, years of use is difficult to avoid rust and other problems, prone to iron ions as well as other heavy metal release exceeded the standard, which may affect the health of the body.