1, the nose foundation is good, and the nose shaping is of little significance.

2. Patients are demanding and unrealistic.

3, the technology is not up to (nasal reconstruction, local defect repair)

4. Safety (inflammation, scar) is not suitable.

5, mental state (whether there is mental illness, whether it is psychologically prepared), people with mental illness or not psychologically prepared are not suitable.

6. Is the age appropriate (not suitable for men under 17 and women under 16)