Coughing when eating cold may be due to cough variant asthma, bronchitis, gastroesophageal reflux and other diseases, need to take medication. 1. Cough variant asthma: patients will have irritating dry cough, chest tightness and other symptoms, need to follow the doctor’s instructions to apply salmeterol, salbutamol and other beta 2 agonists, and anticholinergic drugs, such as tiotropium bromide, ipratropium bromide, and prednisone acetate, methylprednisolone and other glucocorticosteroids. 2. Bronchitis: common symptoms include cough and sputum, etc. Patients should follow the doctor’s instructions to apply cough suppressants such as dextromethorphan and pentoxyverine, β2 agonists such as formoterol and procarbazole, bronchodilators such as aminophylline and doxophylline, and glucocorticosteroids such as budesonide and beclomethasone propionate. 3. Gastroesophageal reflux: The typical symptoms of this disease are heartburn and reflux, and some patients may have extraesophageal symptoms such as cough and nausea. Patients need to follow the medical advice to apply H2 receptor antagonists such as ranitidine and famotidine, and proton pump inhibitors such as omeprazole and lansoprazole, as well as gastric mucosal protective agents such as aluminum thioglycollate. There are many reasons that cause patients to cough as soon as they eat cold, they should go to the hospital to confirm the cause of the disease, and then cooperate with the doctor to treat with medication.