This clinical trial aims to understand whether a visual double-lumen intubation tube can improve the first-attempt success rate and reduce complications compared to a standard double-lumen tube. The trial primarily aims to answer the following questions:

Does a double-lumen tube improve the first-attempt success rate?

Does a visual double-lumen tube reduce the likelihood of obstruction of the right upper lobe bronchial opening?

Does a visual double-lumen tube require fewer adjustments during surgery?

Do patients with visual double-lumen tubes experience fewer perioperative complications compared to those with standard double-lumen tubes?

Participants will:

Use a visual double-lumen tube partially and a standard double-lumen tube partially.

Record the perioperative status of all patients.

Inclusion Criteria:

• Age: at least 18 years old, gender is not limited.
• American Anesthesiologists Association (ASA) Grade I-III;
• Elective Video-Assisted Thoracoscopic Lobectomy.
• Informed consent of the patient or family member.
• People who are willing to accept perioperative visits.

Exclusion Criteria:

• Patients with contraindications for right double-lumen tube insertion (such as right bronchial tumor).
• The patient has known tracheobronchial anatomical abnormalities
• Patients previously diagnosed or suspected of having airway difficulty.
• Patients who need rapid sequence induction.
• Patients requiring emergency surgery
• Patients who have undergone thoracic surgery, systemic infection or suspected tuberculosis in the past four weeks.