Generally speaking, tracheal intubation is needed in general anesthesia surgery, otherwise the application of muscle relaxants will lead to relaxation of tracheal smooth muscle and respiratory disorders.

Suggestion: Generally, anesthetic should be used before tracheal intubation, and intubation should be carried out under the condition that the patient is unconscious. After the operation, the intubation should be removed before the patient regains consciousness. So patients need not be afraid.