Microtia is a hereditary disease with a high incidence rate of about 1/4000-1/10,000. 4,000,000 people in Liaoning Province will have 4,000-10,000 patients with microtia. Over the years, ear reconstruction surgery in China has been divided into 3-4 stages, of which the first stage of surgery is almost always buried dilator, so people generally believe that only buried dilator can be ear reconstruction. In fact, the expander method is very popular in China, but many surgeons abroad use the non-expandable Nagata method and Blent method of ear reconstruction. What are the advantages of the non-expansion method compared to the expansion method? 1, the best time for ear reconstruction surgery is at the age of 9-11 years old, when the patient’s rib cartilage is better developed and can provide a relatively large amount of cartilage. If the child is too young, it is difficult to provide sufficient cartilage, so the so-called clever woman can’t cook without rice. Children older, such as 18 years old, the cartilage will be ossified, take down a lot of cartilage, but the cartilage within the calcified hard core is not conducive to carving and shaping. 9-11 years old is just in the school age, using the expansion method, every 5-7 days to the expansion of the water inside the device, for the field patients really add a lot of difficulties, some patients simply for this reason wording of the school; and non-expansion method does not have to expand, only need to be hospitalized in the two holidays do Two surgeries can be. 2, the dilator method because to place the dilator, increased a surgery, plus anesthesia fees and the cost of the dilator, the total cost of surgery to more. 3.The increase of one additional dilator placement surgery will correspondingly increase the risk, such as: local hematoma, dilator exposure, skin necrosis, injection pot and catheter clogging and so on. 4.The skin has a tendency to shrink after dilatation, once there is skin necrosis cartilage exposure, it is difficult to heal by itself due to skin shrinkage. Which steps of surgery are included in the non-expansion method? The first stage, which can be arranged during the summer and winter vacations, with a hospitalization of about 1 week, involves cutting the patient’s own rib cartilage under general anesthesia, surgical carving, and placing this cartilage scaffold behind the ear. In the second stage, 3-5 months after the first stage of the surgery, just after another summer or winter vacation, a skin graft is placed behind the ear to stand up the stage 1 reconstructed ear and complete the surgery.