Use fat pork, put it in a hot pot, and don't put oil.
Wait for the pork oil to boil out bit by bit. Keep burning and cover the inner wall of the pot with oil. Wait until the pork looks out of oil. Reheat the following. Turn off the fire and let him cool himself. Leave it all night, and it won't rust much later.
Method 2:1.First scrub the rust on the iron pan with nylon wire balls (similar to wire balls, but not damaging the iron pan) or loofah essence. 2. Boil it with boiled rice. When it is hot, wipe the iron pan repeatedly with a dish cloth. It doesn't take a long time. After the ceasefire, put it in a warm place, rinse the iron pan with clear water and dry it. 3. Just wipe all the woks with cooking oil, preferably through the process of using oil (such as fried fish, pancakes, etc.), which will make the oil firmly adsorbed on the woks. The kitchen knife with rice blisters does not rust. You might as well try it.