There are many reasons for a cold, cough and tongue pain, which may be related to acute bronchitis, acute upper respiratory tract infections, and vitamin B12 deficiency. 1.Acute bronchitis:It is an inflammation of the mucous membrane of the trachea and bronchial tubes caused by infection, physical and chemical stimuli or allergic factors. Typical symptoms are coughing up phlegm, fever, chest tightness and shortness of breath, frequent coughing or dry mouth may cause tongue pain. 2. Upper respiratory tract infection: refers to the inflammatory response of the nasal cavity of the throat triggered by bacteria or viruses. Pharyngeal congestion can easily lead to sore throat, which can spread upward when symptoms worsen, resulting in pain at the base of the tongue. 3. Vitamin B2 deficiency: Vitamin B2 deficiency is very common when you have a cold, which can easily lead to mouth ulcers and make the patient have a sore tongue. There are many reasons for cold and cough tongue pain, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease, standardized treatment under the guidance of the doctor, do not unauthorized use of medication, so as not to delay the condition.