Tight throat can be caused by acute epiglottitis, acute laryngitis, pharyngeal swelling, heart disease and other factors. 1. Acute epiglottitis: the epiglottis is infected by pathogens such as Haemophilus influenzae, Staphylococcus aureus, Streptococcus pneumoniae, etc., or local metamorphosis can trigger acute epiglottitis, which can be characterized by pain in the throat, dyspnea, tightness in the throat, and systemic symptoms such as chills, high fever, and shock, etc. Acute laryngitis is usually caused by overuse of the vocal cords, viral and bacterial infection, acute laryngitis, and heart disease. 2. Acute laryngitis: acute laryngitis is usually caused by overuse of the vocal cords, viral and bacterial infections, etc. Symptoms are usually short-lived and mild, and can be characterized by hoarseness, coughing, sputum and pharyngeal discomfort, etc. In severe cases, there can be tightness in the throat and complete loss of voice. 3. Pharyngeal swelling: when there are enlarged lymph nodes, tumors, thyroglossal cysts, pneumatocysts and other swellings in the pharynx, it can cause hoarseness, foreign body sensation in the pharynx, sore throat and other symptoms, and tightness in the throat due to the stimulation of the pharynx by the swelling. 4. Heart disease: myocardial ischemia acute attack, local ischemia and hypoxia, angina pectoris can be triggered, usually located in the anterior region of the heart and back and other areas, can be radiated to the throat and lead to the emergence of the tightness of the symptoms. Tightness of the throat should be timely medical consultation, by the specialist to clarify the condition, under the guidance of the specialist to actively carry out the appropriate treatment, which will help to alleviate the discomfort symptoms as soon as possible.