Laryngeal obstruction is a condition in which the laryngeal airway is narrowed by a lesion in the larynx or adjacent organs, resulting in difficulty in breathing. It is not an independent disease, but a group of syndromes. Laryngeal obstruction can cause hypoxia, which can lead to asphyxia and endanger the patient’s life if not treated in time. Due to the different acute and slow onset, there are two types of laryngeal obstruction: acute and chronic. The following are also causes of laryngeal obstruction: 1. Pediatric acute laryngitis Pediatric acute laryngitis occurs in children aged 6 months to 3 years, is an acute inflammation of the laryngeal mucosa mainly in the vocal fold area, which can be caused by viral or bacterial infection, mostly secondary to upper respiratory tract infection, and can also be a prodrome or complication of some acute infectious diseases. The main feature is hoarseness and coughing like a dog barking, which can lead to life-threatening laryngeal obstruction in severe cases. 2, burns Changes that occur when the organism comes into direct contact with hot objects or is exposed to strong thermal radiation. Injuries caused by flame, high temperature solids and strong radiation heat are called burns. Burns are tissue damage caused by high temperatures, chemicals or electricity. The degree of burns varies by the temperature and the duration of action. 3, laryngeal obstruction laryngeal obstruction is a lesion of the larynx or adjacent organs to narrow the laryngeal airway so that breathing difficulties occur. It is a group of syndromes. As laryngeal obstruction can cause hypoxia, if not treated in time, it can cause asphyxia and endanger the patient’s life. According to the acute and slow onset, laryngeal obstruction is divided into two categories: acute and chronic. 4.Acute epiglottitis Acute epiglottitis, also known as supraglottitis or pre-epiglottitis, is a special kind of acute inflammatory lesion that mainly involves the epiglottis and its surrounding tissues (including epiglottic valley and aryepiglottic folds) in the supraglottic region of the larynx, with epiglottis highly edematous as the main feature. Acute epiglottitis is one of the most serious laryngological emergencies and can occur in both children and adults, mainly manifesting as systemic toxic symptoms, swallowing and breathing difficulties. Acute epiglottitis progresses rapidly, and most patients can be cured with timely treatment, while a few are in critical condition and suffocate quickly, with high mortality. 5.Post-pharyngeal abscess Post-pharyngeal abscess, which occurs in the post-pharyngeal space, is mostly caused by the infection and purulence of the post-pharyngeal lymph nodes, and is divided into two categories: acute cases are mostly seen in children under 3 years old, and more than half of them occur within a week. Chronic cases are rare and are mostly due to abscess formation from cervical spine tuberculosis, also known as cold abscess. The retropharyngeal space is a potential space that starts from the occipital part of the skull base and connects to the posterior mediastinum, with the buccopharyngeal fascia in front and the prevertebral fascia in the back. The lower part is flush with the plane of 3-4 cervical vertebrae and adheres to each other, so the abscess rarely extends down into the posterior mediastinum of the thoracic cavity; the two sides are separated from the parapharyngeal space by incomplete fascia, so the infection may spread to each other in the two spaces. 6, laryngeal paralysis is a disease of the pharynx caused by external evil attack, congestion of the lung system, stagnation of evil in the throat, or deficiency of the internal organs, loss of nourishment of the throat, or burning of the false fire on the main clinical manifestations of pharyngeal redness, swelling and pain, or dryness, foreign body sensation, itching and discomfort. It may be accompanied by fever, headache, cough and other symptoms. The manifestations of acute and chronic pharyngitis and certain systemic diseases in the pharynx in Western medicine can be referred to this article for evidence-based treatment.