The treatment of microtia involves almost all aspects of plastic surgery, including flaps, implants, fascial flaps, expanders, cartilage grafts, etc., making the surgery very difficult, and only a few specialists abroad are able to complete auricular reconstruction. Although non-expansion means of treatment can be used, that is, auricular reconstruction without using the dilator phase I method, this was all done decades ago when the economic conditions were poorer and in the spirit of saving time and cost, and nowadays similar surgeries are rarely performed. The Brent method is generally used abroad and requires more than four surgeries. Although there are people in China who perform this method, after the ear is done, the shape is more bloated and less three-dimensional because the skin has not been expanded. Only after expansion with a dilator can the skin become thinner and increase in size to better show the shape of the cartilage scaffold. This is an older technology and is largely being phased out abroad, but it should be remembered as a pioneer of modern ear reconstruction. Just like the computers used today, the initial shape was bulky and thick, and it took many generations of improvement to form the current thinner and lighter looking model, but no one denies the importance of the original designers of the computer. Nagata method is currently used more abroad, mainly to allow the ears to stand up, but requires an additional relatively large mouth in the head area.