Pain on both sides of the tongue is caused by irritating factors such as tooth tips and stumps, or pathologic factors such as oral ulcers. 1. Oral irritation factors: due to the presence of over-sharp tooth tips and stumps in the mouth, which wear the tongue for a long time and cause pain on both sides of the tongue. 2. Pathologic factors: may be caused by oral ulcers, external injuries, papillitis, lingual inflammation and other diseases. (1) Oral ulcers: Oral ulcers are caused by long-term consumption of spicy and other irritating foods, irregular work and rest, etc., resulting in the symptoms of pain on both sides of the tongue. (2) Tongue papillitis: due to malnutrition, anemia and other reasons, induced by the papillitis of the tongue, resulting in the above symptoms. (3) External injury: due to accidentally biting the tongue while eating, etc., which leads to rupture of the tongue, pain on both sides of the tongue, bleeding and other symptoms. (4) Tongue inflammation: due to bacterial or viral infection, it causes tongue inflammation, which results in pain and swelling of the tongue, thus causing the above symptoms. The pain on both sides of the tongue should go to the hospital in time for symptomatic treatment.