Under flexible bronchoscope, main features of mycoplasma pneumonia are bronchial mucosal lesion, mucous plug blocking, tube debouchement inflammatory stenosis and occlusion, and segmental bronchi ventilation lack. 纤维支气管镜下主要特点为支气管黏膜病变和黏液栓阻塞,管腔开口炎性狭窄、闭塞,段支气管通气不畅;