Toothache leading to earache is commonly caused by oral or other diseases, such as acute pulpitis, wisdom teeth pericoronitis, cardiogenic toothache and so on may lead to the situation. 1. Acute pulpitis: bacterial infection and other causes may lead to the disease, belonging to the more serious inflammatory lesions of the dental pulp, the patient will have symptoms of severe pain. The disease may cause associated pain, radiating pain, etc., such as toothache caused by the same side of the ear pain. 2. Wisdom tooth pericoronitis: Inflammation of the soft tissues around the third molar, i.e. wisdom tooth, patients will experience symptoms such as swollen gums, restricted mouth opening, severe pain, fever, and pain in the root of the ear. 3. Cardiogenic toothache: dental pain caused by coronary heart disease and other heart diseases, radiating pain, the patient will also have a headache, earache and other symptoms. The disease needs to be treated for the primary disease, after the primary disease is controlled, generally toothache, earache and other symptoms will be relieved or disappear. Toothache causing earache needs to go to the regular hospital for consultation and treatment.