1、鼻塞和鼻导管吸氧法：鼻塞法是鼻塞放于一侧鼻前庭内，并与鼻腔紧密接触吸氧。鼻导管法是将一导管插入鼻腔顶端吸氧。
1. Oxygen inhalation by nasal obstruction and nasal catheter: the method of nasal obstruction is to place the nasal obstruction in one side of the nasal vestibule, and close contact with the nasal cavity for oxygen inhalation. Nasal catheterization is the insertion of a catheter into the tip of the nasal cavity for oxygen inhalation.
2、面罩吸氧法：将面罩掩盖病人口鼻吸氧，比鼻塞和鼻导管吸氧法效果好些，但可能造成呼吸性酸中毒。
2. Oxygen inhalation by mask: mask the patient's mouth and nose for oxygen inhalation, which is better than that by nasal obstruction and nasal catheter, but may cause respiratory acidosis.
3、经口吸氧法：如果患者鼻塞或张口呼吸，可以经口吸氧，即用一个较大的导管放入口腔吸氧。
3. Oral oxygen inhalation: if the patient has a stuffy nose or opens his mouth to breathe, he can breathe oxygen through the mouth, that is, put a large catheter into the mouth to breathe oxygen.