9-year-old Niu Niu early loss of primary teeth, gums and permanent teeth due to “thick too hard” not long out recently to have oral hospital, “Meng for help,” so that doctors in her gums on a small mouth, convenience Permanent teeth broken, “soil” out. Wuhan University Oral Hospital children’s dental director, said Song, such as food too fine, the natural Huanya, but the need for surgical intervention in children is increasing. Children usually in the 2-year-old grown all deciduous, 6-7-year-old started Huanya, “deciduous teeth out, the permanent teeth,” this is a normal phenomenon. But in recent years, an increasing number of parents fear that their children were injured deciduous, so that the children only eat soft rotten food, primary teeth are not duly exercise, the normal process of Huanya need the help of surgery to complete. According to Song Kwang-tai, fresh Buyan fine children’s primary teeth are not duly exercise, to Huanya age, not out of deciduous teeth and permanent teeth grow normal, the results of a double row of teeth, hospitals need to unplug the deciduous teeth. The primary teeth are not duly exercise, but also decreased resistance to primary teeth. If the child Tanchi sweets, especially vulnerable to tooth decay, the deciduous teeth prematurely become rotten. Deciduous prematurely become rotten, gums long exposed friction and chew food, the course of time formed a “Laojian” hypertrophy of the gingival hyperplasia impede the normal eruption of permanent teeth.