Cough without fever, the common clinical causes are allergic cough, tracheal foreign body, chronic respiratory diseases, gastroesophageal reflux disease, etc.. 1. Allergic cough: allergy of the organism is related to many factors, mainly allergens, allergies, etc. Part of the population does not have symptoms of fever, but has symptoms of cough, such as allergic asthma, cough variant asthma and so on. 2. Tracheal foreign body: when the general population in the process of eating food inadvertently into the trachea will cause choking, or by the impact of irritating gases will also have the corresponding symptoms, which is a protective physiological response made by the body; when the foreign body to remove the relevant symptoms can be relieved. 3. Chronic respiratory diseases: these diseases are commonly found in chronic bronchitis, chronic pharyngitis, etc. People with the disease usually have a history of smoking or inhalation of other harmful smoke particles and gases, and most of them are found in the older age groups, the main clinical manifestations of which are coughing, coughing up phlegm, etc. The symptoms will be more obvious in fall and winter seasons as well as in the morning when they wake up. 4. Gastroesophageal Reflux Disease (GERD): This disease refers to the reflux of gastric contents into the esophagus and causes a series of clinical symptoms of the syndrome, the clinical manifestations of chest pain, belching, epigastric burning sensation, coughing and so on. Cough without fever there are other causes, such as pulmonary fibrosis, cough variant asthma, eosinophilic bronchitis, upper airway cough syndrome, etc., it is recommended to go to the regular hospital as soon as possible, in the doctor’s examination and judgment of a clear diagnosis, symptomatic treatment.