1. rhinoplasty material injection: 1, orbicularis oculi muscle activity, facial expression activity, gravity, etc. , causing the injected substance to flow to both sides and under the nose. 2. The injection material itself will flow.

2. Selection of injection rhinoplasty method: 1. Whether the beauty seeker's own situation meets the requirements of injection rhinoplasty.

2. The injection of rhinoplasty is concentrated at the same level, rather than multi-point stratified injection. 3, the doctor injected too deep, too shallow and other methods are improper.

Three. Other possibilities:

1. No regular hospital was selected, and the quality of injection materials was problematic.

2. The plastic surgeon's technical and aesthetic ability is not high, and the hand rubbing effect of rhinoplasty injection is poor.

3. Improper postoperative care leads to operation failure.