The time needed for the correction of the circumcision is usually around 1~3 years, the exact time is not certain, and it is related to the condition of the individual circumcision as well as his/her age. In medical terms, the circumference of the earth is called anti-mandibular, there are dental circumference and bony circumference, etc. If it is dental circumference correction will be relatively easier, the time needed will be shorter, it may only need about 1~2 years, if it is bony circumference, the correction will be more difficult, the time needed will be relatively longer, it may need about 2~3 years. There are also different ages of people to do the correction of the circumference of the sky, the time needed is also different, if it is a minor to do the correction, due to the oral cavity is still in the period of growth and development, the correction will take a relatively short time, if it is an adult to do the correction, due to the growth and development has been fixed, the correction of the difficulty will be increased, and it will take a longer period of time. The existence of the problem of the circumcision is recommended to actively go to a professional hospital, the doctor will be based on the actual situation of the individual to adopt a suitable correction program, during the correction must seriously cooperate with the doctor, so as to achieve better results.