The cost of correction before the child is 6 years old is 4000-8000 yuan. For patients aged 6- 12, the correction cost is about 8000 yuan. The treatment of adult patients depends on the use of invisible appliances or fixed appliances. The cost of invisible household appliances is relatively high, about 30-60 thousand yuan, and the cost of fixed household appliances is between 20-30 thousand yuan. If the patient with bone covering the sky is covered with bone, it may involve orthodontics and orthognathic treatment, and the cost of surgery will be higher. So the problem depends on different situations.