Herodotus left us detailed information about this. First, apply melted turpentine to your face to protect your facial image and prevent it from drying too fast. Second, brain pulp processing. The craftsman inserted the chisel into the left nostril, crushed the ethmoid bone, and then used tools to rotate in the brain, destroying the brain marrow. Insert a very small long-handled spoon into the brain from the nostril, dig out the brains, and finally put some drugs and spices into the empty skull. Brain marrow is generally not preserved. Third, take out the internal organs. The stomach, intestine, liver and lung were taken out through the left incision in the abdomen. Then use palm oil as cleaning solution to clean the chest and abdomen. Sometimes these organs are neatly wrapped in turpentine balls and put into the mummy's abdomen, and sometimes they are put into a small jar with a lid and then put into the abdomen. Small pots are becoming more and more complicated from the ancient kingdom to the new kingdom. At first, there were some simple pot covers, but in the Middle Kingdom, there were pot covers with heads. In the early18th century, the lid of the jar was guarded by the "son of Horace". However, it was forbidden to take out the heart in ancient Egypt. They regard the heart as a symbol of wisdom and try their best to keep it in the body. In the book of the dead in the New Kingdom, there are three people on duty who take turns guarding the heart. Fourth, dehydration. This is an important drying process. The craftsmen first wrapped the soaked alkali and other temporary fillers in cloth, and then soaked them in dry soaked alkali powder for about 40 days. After the water is drained, they take out the stuffing inside and put crushed myrrh, cinnamon, soaked alkali, sawdust and so on in cloth bags. Finally, they carefully stitched the incision and pasted a piece of skin with Horace's eyes painted on it, because the ancient Egyptians missed the strong healing and protection of this skin. Fifth, cosmetic surgery. In order to keep the mummy's skin soft, it was selectively coated with a mixture of milk, wine, spices, beeswax, turpentine and asphalt to beautify the skin. Mummy's eyes are full of linen and stones, which are very vivid. The mummy was finally coated with turpentine to prevent moisture, and the makeup artist also sprinkled a layer of carmine on the mummy's cheeks, wearing a braided wig, clothes and the best jewelry. Sixth, the bag. Egyptians thought it was dangerous to be buried, so prayers were accompanied during the whole process (usually 15 days). Every time the hand that bandages the body moves, it is accompanied by solemn prayers or magic spells, and protective strips are placed between linen bandages. They attach great importance to keeping it in their hearts. Amulets are generally made of scarab-shaped or heart-shaped green stones with the words "Preserve the heart of the deceased so that it will not produce anything harmful to its owner". Other amulets were placed near the mummy's body or wrapped in linen. Seventh, the mummy greeted his card. The time is usually 70 days. After that, Anubis secretly returned the mummy to his family for burial. Local people's normal production method: (1), immediately take out the most perishable internal organs. Usually, an incision is made on the left side of the corpse to remove all the internal organs such as liver, lung, stomach and intestine, and the brain marrow of the deceased is taken out from the nostril through the ethmoid bone, but the heart is not taken. Because the ancient Egyptians believed that the heart was an organ for thinking and understanding and must remain in the body. (2) To preserve the viscera and body cavity, firstly clean and disinfect them thoroughly with palm wine or date palm wine, then sprinkle a layer of mashed spices on the viscera and store them in four jars; For the disinfected body cavity, it is first filled with temporary fillers such as cloth-wrapped alkali soaking, and then soaked in dry alkali soaking powder for about 40 days. After draining the water, take out the filler and replace it with a cloth wrapped with crushed myrrh, cinnamon, alkali soaking and sawdust. Finally, carefully sew the knife edge and paste a piece of skin with Horace's eyes painted on it, because the ancient Egyptians thought this kind of skin had strong healing and protective power. (3) Apply a layer of ointment or rosin solution to the treated corpse, and then wrap fingers, palms, feet and stems with white linen in turn. The nose of the deceased is sometimes damaged by extracting brain marrow. At this time, a wooden fake nose should be installed, and the eye socket should be stuffed with cloth to make a fake eye. (4) Put the deceased's hands on his chest, put them in the sarcophagus, and sometimes add a coffin cover outside. In this way, a permanently incorruptible corpse is completed.