Teflon coated pots and pans are only harmful when the Teflon coating reaches a certain temperature to be decomposed. The main component of Teflon coating is PTFE, which usually releases toxic substances when heated at high temperatures, but the decomposition of Teflon coating requires a high temperature of 350℃, and it starts to decompose at 260℃, and no change will happen within 260℃. Usually the highest temperature we use when cooking in daily life is 250℃, which is the temperature of the frying pan, so in normal cooking, Teflon coating will not release harmful substances. In normal cooking temperature control, no need to worry about the Teflon coating decomposition of harmful substances harmful to human health, you can rest assured that safe to use, if you really do not rest assured, you can consider ceramic-coated pots and pans, the main ingredient is inorganic silicon dioxide, usually does not produce toxic substances.