If a CT is done after a bronchoscopic biopsy, it can be done at any time if the condition requires it. however, if the bronchoscopy is accompanied by other conditions such as infections, the accuracy of the CT results may be affected, and it is usually necessary to perform a CT examination after the accompanying symptoms have improved. The timing depends on the patient’s specific situation. Some patients may have abnormal conditions such as airway edema, bleeding or concomitant infection after bronchoscopic biopsy, which may affect the accuracy of CT examination, and CT examination should be performed after the above symptoms are controlled. Therefore, patients should judge the timing of other examinations according to the actual situation and after evaluation by the doctor. After the tracheoscopy biopsy, patients should pay attention to the rationality of diet, avoiding the intake of spicy and stimulating foods, such as chili peppers, peppercorns, etc., and avoiding strong tea, coffee, alcohol, smoking, etc., in order to prevent the impact of local trauma recovery. It is recommended that patients consult regular hospitals for tracheoscopic biopsy, CT examination, etc. If discomfort is accompanied by symptoms during or after the examination, actively cooperate with the physician to prevent accidents from occurring.