5-year-old children only cough without fever, may be caused by bronchitis, pharyngitis, allergic cough. 1. Bronchitis: when bacteria, fungi and other pathogenic microorganisms enter the body with the air, they can cause irritation to the bronchial mucosa and surrounding tissues, thus causing a localized inflammatory response in the bronchial tubes, resulting in a cough without fever. 2. Pharyngitis: after the pharynx suffers from viral infection, it will make the pharyngeal mucosa, submucosal tissues undergo edema, oozing and other inflammatory reactions, and it will also involve the pharyngeal lymphatic tissues, so that the throat appears pain, cough and other symptoms. 3. Allergic cough: when exposed to pollen, dust, mold and other allergens, the human respiratory mucosa will produce stimulation, inducing respiratory cilia movement, thus causing cough symptoms, but will not cause fever performance. 5-year-old child only cough without fever, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.