Sudden choking may be caused by throat discomfort, respiratory tract infection, thyroiditis and heart disease. 1. Dysphagia: Sudden asphyxia occurs when the patient has dysphagia, a foreign body blocking the throat and leading to tissue displacement, causing swelling and hematoma. It is recommended that the patient should be sent to the hospital immediately for treatment. 2. Respiratory tract infections: When the patient suffers from bronchitis, bronchopneumonia and bronchial asthma, the symptoms of sudden asphyxiation will occur, because the above diseases will affect the normal breathing of the patient, you can use antibiotic drugs under the guidance of the doctor for treatment and so on. 3. Thyroiditis: Patients with thyroiditis may experience arrhythmia, which can cause sudden asphyxia. Sodium channel blockers can be used to alleviate the treatment, such as quinidine and lidocaine. 4. Heart disease: such as cardiac paralysis, when cardiac paralysis attack, there may be cardiac arrest, which will lead to sudden asphyxia symptoms. After the appearance of sudden asphyxia, it is recommended that patients go to the hospital in time for examination and diagnosis, and under the guidance of the doctor for medication.